CA172245A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA172245A
CA172245A CA172245DA CA172245A CA 172245 A CA172245 A CA 172245A CA 172245D A CA172245D A CA 172245DA CA 172245 A CA172245 A CA 172245A
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
Other languages
English (en)
Inventor
Elmer R. Corwin
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.)
FRANK B COOK Co
Original Assignee
FRANK B COOK Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by FRANK B COOK Co filed Critical FRANK B COOK Co
Application granted granted Critical
Publication of CA172245A publication Critical patent/CA172245A/fr
Expired legal-status Critical Current

Links

CA172245D 1915-01-09 1915-01-09 Systeme telephonique Expired CA172245A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA172245T 1915-01-09

Publications (1)

Publication Number Publication Date
CA172245A true CA172245A (fr) 1916-10-03

Family

ID=45291900

Family Applications (1)

Application Number Title Priority Date Filing Date
CA172245D Expired CA172245A (fr) 1915-01-09 1915-01-09 Systeme telephonique

Country Status (1)

Country Link
CA (1) CA172245A (fr)

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