CA1004786A - Push-button calling circuits for telephone sets - Google Patents

Push-button calling circuits for telephone sets

Info

Publication number
CA1004786A
CA1004786A CA210,195A CA210195A CA1004786A CA 1004786 A CA1004786 A CA 1004786A CA 210195 A CA210195 A CA 210195A CA 1004786 A CA1004786 A CA 1004786A
Authority
CA
Canada
Prior art keywords
push
telephone sets
calling circuits
button calling
button
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
CA210,195A
Other versions
CA210195S (en
Inventor
Jose Antonio Maestre Jimenez
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.)
ITT Canada Ltd
Original Assignee
ITT Canada Ltd
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 ITT Canada Ltd filed Critical ITT Canada Ltd
Priority to CA210,195A priority Critical patent/CA1004786A/en
Application granted granted Critical
Publication of CA1004786A publication Critical patent/CA1004786A/en
Expired legal-status Critical Current

Links

CA210,195A 1974-09-27 1974-09-27 Push-button calling circuits for telephone sets Expired CA1004786A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA210,195A CA1004786A (en) 1974-09-27 1974-09-27 Push-button calling circuits for telephone sets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA210,195A CA1004786A (en) 1974-09-27 1974-09-27 Push-button calling circuits for telephone sets

Publications (1)

Publication Number Publication Date
CA1004786A true CA1004786A (en) 1977-02-01

Family

ID=4101228

Family Applications (1)

Application Number Title Priority Date Filing Date
CA210,195A Expired CA1004786A (en) 1974-09-27 1974-09-27 Push-button calling circuits for telephone sets

Country Status (1)

Country Link
CA (1) CA1004786A (en)

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