CA89518A - Cle pour commutateurs de telephone - Google Patents

Cle pour commutateurs de telephone

Info

Publication number
CA89518A
CA89518A CA000089518A CA89518DA CA89518A CA 89518 A CA89518 A CA 89518A CA 000089518 A CA000089518 A CA 000089518A CA 89518D A CA89518D A CA 89518DA CA 89518 A CA89518 A CA 89518A
Authority
CA
Canada
Prior art keywords
ringing key
telephone switchboards
switchboards
telephone
ringing
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
CA000089518A
Other languages
English (en)
Inventor
Frank Robert Mcberty
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.)
Bell Telephone Company of Canada
Original Assignee
Bell Telephone Company of Canada
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 Bell Telephone Company of Canada filed Critical Bell Telephone Company of Canada
Application granted granted Critical
Publication of CA89518A publication Critical patent/CA89518A/fr
Expired legal-status Critical Current

Links

CA000089518A 1904-05-05 1904-05-05 Cle pour commutateurs de telephone Expired CA89518A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA89518T 1904-05-05

Publications (1)

Publication Number Publication Date
CA89518A true CA89518A (fr) 1904-10-11

Family

ID=45206053

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000089518A Expired CA89518A (fr) 1904-05-05 1904-05-05 Cle pour commutateurs de telephone

Country Status (1)

Country Link
CA (1) CA89518A (fr)

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