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.
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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.

Bibliographic Details
Corporate Authors: United States. Congress. Senate, United States. Department of Commerce
Format: Government Document Online Book
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:
Access:ONLINE VERSION
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