CA801832A - Telephone extension system - Google Patents

Telephone extension system

Info

Publication number
CA801832A
CA801832A CA801832A CA801832DA CA801832A CA 801832 A CA801832 A CA 801832A CA 801832 A CA801832 A CA 801832A CA 801832D A CA801832D A CA 801832DA CA 801832 A CA801832 A CA 801832A
Authority
CA
Canada
Prior art keywords
extension system
telephone extension
telephone
extension
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
CA801832A
Inventor
P. Driver Joel
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.)
American Telephone Extension Corp
Original Assignee
American Telephone Extension Corp
Publication date
Application granted granted Critical
Publication of CA801832A publication Critical patent/CA801832A/en
Expired legal-status Critical Current

Links

CA801832A Telephone extension system Expired CA801832A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA801832T

Publications (1)

Publication Number Publication Date
CA801832A true CA801832A (en) 1968-12-17

Family

ID=36269858

Family Applications (1)

Application Number Title Priority Date Filing Date
CA801832A Expired CA801832A (en) Telephone extension system

Country Status (1)

Country Link
CA (1) CA801832A (en)

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