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AU495147B2 - Improvements in key telephone systems - Google Patents
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AU495147B2 - Improvements in key telephone systems - Google Patents

Improvements in key telephone systems

Info

Publication number
AU495147B2
AU495147B2 AU83593/75A AU8359375A AU495147B2 AU 495147 B2 AU495147 B2 AU 495147B2 AU 83593/75 A AU83593/75 A AU 83593/75A AU 8359375 A AU8359375 A AU 8359375A AU 495147 B2 AU495147 B2 AU 495147B2
Authority
AU
Australia
Prior art keywords
telephone systems
key telephone
key
systems
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
AU83593/75A
Other versions
AU8359375A (en
Inventor
Edwin Matheny Coy
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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
Priority claimed from US05/495,580 external-priority patent/US3941943A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of AU8359375A publication Critical patent/AU8359375A/en
Publication of AU495147B2 publication Critical patent/AU495147B2/en
Expired legal-status Critical Current

Links

AU83593/75A 1974-08-08 1975-08-01 Improvements in key telephone systems Expired AU495147B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/495,580 US3941943A (en) 1974-08-08 1974-08-08 Privacy circuit for key telephone systems
USUS495580 1974-08-08

Publications (2)

Publication Number Publication Date
AU8359375A AU8359375A (en) 1977-02-03
AU495147B2 true AU495147B2 (en) 1977-02-03

Family

ID=

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