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JPS52139303A - Key telephone - Google Patents

Key telephone

Info

Publication number
JPS52139303A
JPS52139303A JP5531676A JP5531676A JPS52139303A JP S52139303 A JPS52139303 A JP S52139303A JP 5531676 A JP5531676 A JP 5531676A JP 5531676 A JP5531676 A JP 5531676A JP S52139303 A JPS52139303 A JP S52139303A
Authority
JP
Japan
Prior art keywords
key telephone
display
space
core wire
equipment cost
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.)
Pending
Application number
JP5531676A
Other languages
Japanese (ja)
Inventor
Koichi Sekiguchi
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.)
Iwatsu Electric Co Ltd
Original Assignee
Iwatsu Electric Co 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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Priority to JP5531676A priority Critical patent/JPS52139303A/en
Publication of JPS52139303A publication Critical patent/JPS52139303A/en
Priority to US06/066,927 priority patent/US4410767A/en
Pending legal-status Critical Current

Links

Landscapes

  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE: To realize the office reception, display, response transmission, etc. using an extremely reduced number of the core wire cable compared with the conventional system. Thus, both the equipment cost and space can be reduced.
COPYRIGHT: (C)1977,JPO&Japio
JP5531676A 1976-05-17 1976-05-17 Key telephone Pending JPS52139303A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP5531676A JPS52139303A (en) 1976-05-17 1976-05-17 Key telephone
US06/066,927 US4410767A (en) 1976-05-17 1979-08-16 Key telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5531676A JPS52139303A (en) 1976-05-17 1976-05-17 Key telephone

Publications (1)

Publication Number Publication Date
JPS52139303A true JPS52139303A (en) 1977-11-21

Family

ID=12995138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5531676A Pending JPS52139303A (en) 1976-05-17 1976-05-17 Key telephone

Country Status (1)

Country Link
JP (1) JPS52139303A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5440405A (en) * 1977-09-06 1979-03-29 Daijirou Mase Colored tire

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5440405A (en) * 1977-09-06 1979-03-29 Daijirou Mase Colored tire

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