CA995832A - Signalling device for key telephone systems - Google Patents

Signalling device for key telephone systems

Info

Publication number
CA995832A
CA995832A CA206,713A CA206713A CA995832A CA 995832 A CA995832 A CA 995832A CA 206713 A CA206713 A CA 206713A CA 995832 A CA995832 A CA 995832A
Authority
CA
Canada
Prior art keywords
telephone systems
key telephone
signalling device
signalling
key
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
CA206,713A
Other versions
CA206713S (en
Inventor
Alexander C. Mcintosh
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA995832A publication Critical patent/CA995832A/en
Expired legal-status Critical Current

Links

CA206,713A 1974-03-04 1974-08-09 Signalling device for key telephone systems Expired CA995832A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44803674A 1974-03-04 1974-03-04

Publications (1)

Publication Number Publication Date
CA995832A true CA995832A (en) 1976-08-24

Family

ID=23778754

Family Applications (1)

Application Number Title Priority Date Filing Date
CA206,713A Expired CA995832A (en) 1974-03-04 1974-08-09 Signalling device for key telephone systems

Country Status (1)

Country Link
CA (1) CA995832A (en)

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