In Court of Appeals of D.C., Oct. term, 1926, patent appeal No. 1927, in re Arvid Ek, improvement in paper towels;brief for Commissioner of Patents [microform]

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Bibliographic Details
Corporate Author: United States. Patent Office
Other Authors: Ek, Arvid
Format: Government Document Microfilm Book
Language:English
Published: [Washington?] : U.S. G.P.O., 1926.
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Call Number: EBD C21.10-145
EBD C21.10-145 Restricted Place a Hold