CA385068A - Systeme de transmission telephonique - Google Patents

Systeme de transmission telephonique

Info

Publication number
CA385068A
CA385068A CA385068A CA385068DA CA385068A CA 385068 A CA385068 A CA 385068A CA 385068 A CA385068 A CA 385068A CA 385068D A CA385068D A CA 385068DA CA 385068 A CA385068 A CA 385068A
Authority
CA
Canada
Prior art keywords
transmission system
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
CA385068A
Other languages
English (en)
Inventor
H. Smith Howard
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
Publication date
Application granted granted Critical
Publication of CA385068A publication Critical patent/CA385068A/fr
Expired legal-status Critical Current

Links

CA385068A Systeme de transmission telephonique Expired CA385068A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA385068T

Publications (1)

Publication Number Publication Date
CA385068A true CA385068A (fr) 1939-11-14

Family

ID=35390291

Family Applications (1)

Application Number Title Priority Date Filing Date
CA385068A Expired CA385068A (fr) Systeme de transmission telephonique

Country Status (1)

Country Link
CA (1) CA385068A (fr)

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