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  1. 1
    Amendments to patent laws. : Hearings before the Committee on patents, House of representatives, Seventy-sixth Congress, third session, on H.R. 8441, a bill to afford greater protection to the purchaser of patent rights; H.R. 8442 (and substitute H.R. 9616) a bill to prohibit proof of acts done by an inventor in foreign countries; H.R. 8444, a bill to permit the assignee of an application for letters patent to make certain supplemental applications; H.R. 9384, a bill to simplify the practice in cases where a patent is or may be in part valid and in part invalid; H.R. 9386, a bill to improve the practice concerning applications for patents made by plural applicants and patents issued thereon, to provide for applications in certain circumstances by assignees of inventors, and to simplify the formal application papers; H.R. 9388, a bill to protect inventors whose first application for patent was filed in a foreign country from undue limitations of their rights to obtain United States patents. May 9 and 16, 1940.

    Amendments to patent laws. : Hearings before the Committee on patents,...

    Published 1940
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  2. 2
    Amending Patent Laws hearings before the United States House Committee on Patents, Sixty-Fifth Congress, second session, on May 14, 1918.

    Amending Patent Laws hearings before the United States House Committee on Patents, Sixty-Fifth Congress, second session, on May 14, 1918.

    Published 1918
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  3. 3
    Amending Patent Laws hearings before the United States House Committee on Patents, Sixty-Fifth Congress, third session, on Jan. 30, 1919.

    Amending Patent Laws hearings before the United States House Committee on Patents, Sixty-Fifth Congress, third session, on Jan. 30, 1919.

    Published 1919
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  4. 4
    Amending Patent Laws hearings before the United States House Committee on Patents, Sixty-Fifth Congress, third session, on Jan. 30, 1919.

    Amending Patent Laws hearings before the United States House Committee on Patents, Sixty-Fifth Congress, third session, on Jan. 30, 1919.

    Published 1919
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  5. 5
    Amending Patent Laws hearings before the United States House Committee on Patents, Sixty-Fifth Congress, third session, on Feb. 10, 1919.

    Amending Patent Laws hearings before the United States House Committee on Patents, Sixty-Fifth Congress, third session, on Feb. 10, 1919.

    Published 1919
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  6. 6
    Amendment of the Patent Laws, Dyestuffs. hearings before the United States House Committee on Patents, Sixty-Third Congress, third session, on Jan. 13, 1915.

    Amendment of the Patent Laws, Dyestuffs. hearings before the United States House Committee on Patents, Sixty-Third Congress, third session, on Jan. 13, 1915.

    Published 1915
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  7. 7
    Amendment of the Patent Laws, Dyestuffs. hearings before the United States House Committee on Patents, Sixty-Third Congress, third session, on Jan. 14, 1915.

    Amendment of the Patent Laws, Dyestuffs. hearings before the United States House Committee on Patents, Sixty-Third Congress, third session, on Jan. 14, 1915.

    Published 1915
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  8. 8
    Amendment of the Patent Laws, Dyestuffs. hearings before the United States House Committee on Patents, Sixty-Third Congress, third session, on Jan. 28, 1915.

    Amendment of the Patent Laws, Dyestuffs. hearings before the United States House Committee on Patents, Sixty-Third Congress, third session, on Jan. 28, 1915.

    Published 1915
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  9. 9
    Patents. : Hearings before the Committee on patents, House of representatives, Seventy-second Congress, first session, on general revision of patent laws. January 25, 26, 27, and 28, February 16, 17, 1932.

    Patents. : Hearings before the Committee on patents, House of representatives, Seventy-second Congress, first session, on general revision of patent laws. January 25, 26, 27, and 28, February...

    Published 1932
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  10. 10
    General Revision and Amendment of the Patent Law hearings before the United States House Committee on Patents, Seventy-Second Congress, first session, on Mar. 30, 31, 1932.

    General Revision and Amendment of the Patent Law hearings before the United States House...

    Published 1932
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  11. 11
    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House Committee on Patents, Sixty-Third Congress, second session, on June 10, 1914.

    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House...

    Published 1914
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  12. 12
    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House Committee on Patents, Sixty-Third Congress, second session, on June 12, 1914.

    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House...

    Published 1914
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  13. 13
    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House Committee on Patents, Sixty-Third Congress, second session, on Sept. 4, 1914.

    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House...

    Published 1914
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  14. 14
    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House Committee on Patents, Sixty-Third Congress, second session, on May 27, 1914.

    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House...

    Published 1914
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  15. 15
    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House Committee on Patents, Sixty-Third Congress, second session, on June 3, 1914.

    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House...

    Published 1914
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  16. 16
    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House Committee on Patents, Sixty-Third Congress, second session, on June 8, 1914.

    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House...

    Published 1914
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  17. 17
    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House Committee on Patents, Sixty-Third Congress, second session, on June 15, 1914.

    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House...

    Published 1914
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  18. 18
    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House Committee on Patents, Sixty-Third Congress, second session, on June 17, 1914.

    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House...

    Published 1914
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  19. 19
    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House Committee on Patents, Sixty-Third Congress, second session, on June 26, 1914.

    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House...

    Published 1914
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  20. 20
    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House Committee on Patents, Sixty-Third Congress, second session, on July 29, 1914.

    Oldfield Revision and Codification of the Patent Laws. hearings before the United States House...

    Published 1914
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