CA549245A - Finder switch control circuits for telephone systems - Google Patents

Finder switch control circuits for telephone systems

Info

Publication number
CA549245A
CA549245A CA549245A CA549245DA CA549245A CA 549245 A CA549245 A CA 549245A CA 549245 A CA549245 A CA 549245A CA 549245D A CA549245D A CA 549245DA CA 549245 A CA549245 A CA 549245A
Authority
CA
Canada
Prior art keywords
switch control
control circuits
telephone systems
finder switch
finder
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
CA549245A
Other languages
French (fr)
Inventor
Mercer Richard
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA549245A publication Critical patent/CA549245A/en
Expired legal-status Critical Current

Links

CA549245A Finder switch control circuits for telephone systems Expired CA549245A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA549245T

Publications (1)

Publication Number Publication Date
CA549245A true CA549245A (en) 1957-11-26

Family

ID=35710620

Family Applications (1)

Application Number Title Priority Date Filing Date
CA549245A Expired CA549245A (en) Finder switch control circuits for telephone systems

Country Status (1)

Country Link
CA (1) CA549245A (en)

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