Multiplex telegraphy and telephony. Letter from the Secretary of Commerce submitting in response to Senate Resolution No. 149, a report concerning the discovery of multiplex telegraphy and telephony and the extent to which this system is now used. December 9, 1926. -- Referred to the Committee on Patents [electronic resource]

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Bibliographic Details
Online Access:	Online Access
Corporate Authors:	United States. Congress. Senate, United States. Department of Commerce
Format:	Government Document Electronic eBook
Language:	English
Published:	[Washington, D.C.] : [U.S. Government Printing Office], 1926.
Series:	Senate document (United States. Congress. Senate) ; 69th Congress, no. 172. United States congressional serial set ; serial no. 8712.
Subjects:	Inventions. Judicial opinions. Actions and defenses. Patent infringement. Patents. Telephone companies. Telephone. Legislative materials.

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Call Number:	69-2:S.DOC.172
69-2:S.DOC.172	Available