CA302272A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA302272A
CA302272A CA302272A CA302272DA CA302272A CA 302272 A CA302272 A CA 302272A CA 302272 A CA302272 A CA 302272A CA 302272D A CA302272D A CA 302272DA CA 302272 A CA302272 A CA 302272A
Authority
CA
Canada
Prior art keywords
telephone system
telephone
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
CA302272A
Other languages
English (en)
Inventor
Ellis Ostline John
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 CA302272A publication Critical patent/CA302272A/fr
Expired legal-status Critical Current

Links

CA302272A Systeme telephonique Expired CA302272A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA302272T

Publications (1)

Publication Number Publication Date
CA302272A true CA302272A (fr) 1930-07-22

Family

ID=35255418

Family Applications (1)

Application Number Title Priority Date Filing Date
CA302272A Expired CA302272A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA302272A (fr)

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