CA421132A - Transmetteur et recepteur de telephone - Google Patents

Transmetteur et recepteur de telephone

Info

Publication number
CA421132A
CA421132A CA421132A CA421132DA CA421132A CA 421132 A CA421132 A CA 421132A CA 421132 A CA421132 A CA 421132A CA 421132D A CA421132D A CA 421132DA CA 421132 A CA421132 A CA 421132A
Authority
CA
Canada
Prior art keywords
receiver
telephone transmitter
telephone
transmitter
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
CA421132A
Other languages
English (en)
Inventor
Samuel Paterson Robertson James
Lawrence Gayford Michael
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
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA421132A publication Critical patent/CA421132A/fr
Expired legal-status Critical Current

Links

CA421132A Transmetteur et recepteur de telephone Expired CA421132A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA421132T

Publications (1)

Publication Number Publication Date
CA421132A true CA421132A (fr) 1944-06-27

Family

ID=35532082

Family Applications (1)

Application Number Title Priority Date Filing Date
CA421132A Expired CA421132A (fr) Transmetteur et recepteur de telephone

Country Status (1)

Country Link
CA (1) CA421132A (fr)

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