JPS5330802A - Key telephone system - Google Patents

Key telephone system

Info

Publication number
JPS5330802A
JPS5330802A JP10550076A JP10550076A JPS5330802A JP S5330802 A JPS5330802 A JP S5330802A JP 10550076 A JP10550076 A JP 10550076A JP 10550076 A JP10550076 A JP 10550076A JP S5330802 A JPS5330802 A JP S5330802A
Authority
JP
Japan
Prior art keywords
telephone system
key telephone
key
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.)
Granted
Application number
JP10550076A
Other languages
Japanese (ja)
Other versions
JPS5438003B2 (en
Inventor
Kunitoshi Narita
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.)
Meisei Electric Co Ltd
Original Assignee
Meisei 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 Meisei Electric Co Ltd filed Critical Meisei Electric Co Ltd
Priority to JP10550076A priority Critical patent/JPS5330802A/en
Publication of JPS5330802A publication Critical patent/JPS5330802A/en
Publication of JPS5438003B2 publication Critical patent/JPS5438003B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP10550076A 1976-09-03 1976-09-03 Key telephone system Granted JPS5330802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10550076A JPS5330802A (en) 1976-09-03 1976-09-03 Key telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10550076A JPS5330802A (en) 1976-09-03 1976-09-03 Key telephone system

Publications (2)

Publication Number Publication Date
JPS5330802A true JPS5330802A (en) 1978-03-23
JPS5438003B2 JPS5438003B2 (en) 1979-11-19

Family

ID=14409311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10550076A Granted JPS5330802A (en) 1976-09-03 1976-09-03 Key telephone system

Country Status (1)

Country Link
JP (1) JPS5330802A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56161755A (en) * 1980-05-16 1981-12-12 Iwatsu Electric Co Ltd Power supply system for key telephone set
JPS5846757A (en) * 1981-09-16 1983-03-18 Iwatsu Electric Co Ltd Doorphone calling system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5213706A (en) * 1975-07-23 1977-02-02 Kanda Tsushin Kogyo Kk Key telephone system
JPS52104008A (en) * 1976-02-27 1977-09-01 Taiko Denki Seisakusho:Kk Connecting method of button telephone apparatus
JPS52111302A (en) * 1976-03-15 1977-09-19 Taiko Denki Seisakusho:Kk Connecting system of button telephone set
JPS52116004A (en) * 1976-03-26 1977-09-29 Kanda Tsushin Kogyo Kk Voice call system
JPS52120706A (en) * 1976-04-05 1977-10-11 Kanda Tsushin Kogyo Kk Improved parent-child telephone equipment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5213706A (en) * 1975-07-23 1977-02-02 Kanda Tsushin Kogyo Kk Key telephone system
JPS52104008A (en) * 1976-02-27 1977-09-01 Taiko Denki Seisakusho:Kk Connecting method of button telephone apparatus
JPS52111302A (en) * 1976-03-15 1977-09-19 Taiko Denki Seisakusho:Kk Connecting system of button telephone set
JPS52116004A (en) * 1976-03-26 1977-09-29 Kanda Tsushin Kogyo Kk Voice call system
JPS52120706A (en) * 1976-04-05 1977-10-11 Kanda Tsushin Kogyo Kk Improved parent-child telephone equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56161755A (en) * 1980-05-16 1981-12-12 Iwatsu Electric Co Ltd Power supply system for key telephone set
JPS5846757A (en) * 1981-09-16 1983-03-18 Iwatsu Electric Co Ltd Doorphone calling system

Also Published As

Publication number Publication date
JPS5438003B2 (en) 1979-11-19

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