CA306609A - Transmission telephonique - Google Patents

Transmission telephonique

Info

Publication number
CA306609A
CA306609A CA306609A CA306609DA CA306609A CA 306609 A CA306609 A CA 306609A CA 306609 A CA306609 A CA 306609A CA 306609D A CA306609D A CA 306609DA CA 306609 A CA306609 A CA 306609A
Authority
CA
Canada
Prior art keywords
telephone transmission
telephone
transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA306609A
Other languages
English (en)
Inventor
E. Buckley Oliver
V. L. Hartley Ralph
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA306609A publication Critical patent/CA306609A/fr
Expired legal-status Critical Current

Links

CA306609A Transmission telephonique Expired CA306609A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA306609T

Publications (1)

Publication Number Publication Date
CA306609A true CA306609A (fr) 1930-12-09

Family

ID=35259760

Family Applications (1)

Application Number Title Priority Date Filing Date
CA306609A Expired CA306609A (fr) Transmission telephonique

Country Status (1)

Country Link
CA (1) CA306609A (fr)

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