JPS53107205A - Button telephone set - Google Patents

Button telephone set

Info

Publication number
JPS53107205A
JPS53107205A JP2144077A JP2144077A JPS53107205A JP S53107205 A JPS53107205 A JP S53107205A JP 2144077 A JP2144077 A JP 2144077A JP 2144077 A JP2144077 A JP 2144077A JP S53107205 A JPS53107205 A JP S53107205A
Authority
JP
Japan
Prior art keywords
telephone set
button telephone
button
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.)
Pending
Application number
JP2144077A
Other languages
Japanese (ja)
Inventor
Masahiro Sarutani
Takemi Shiyouji
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.)
Nakayo Telecommunications Inc
Original Assignee
Nakayo Telecommunications Inc
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 Nakayo Telecommunications Inc filed Critical Nakayo Telecommunications Inc
Priority to JP2144077A priority Critical patent/JPS53107205A/en
Publication of JPS53107205A publication Critical patent/JPS53107205A/en
Pending legal-status Critical Current

Links

Landscapes

  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP2144077A 1977-03-02 1977-03-02 Button telephone set Pending JPS53107205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2144077A JPS53107205A (en) 1977-03-02 1977-03-02 Button telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2144077A JPS53107205A (en) 1977-03-02 1977-03-02 Button telephone set

Publications (1)

Publication Number Publication Date
JPS53107205A true JPS53107205A (en) 1978-09-19

Family

ID=12055015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2144077A Pending JPS53107205A (en) 1977-03-02 1977-03-02 Button telephone set

Country Status (1)

Country Link
JP (1) JPS53107205A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62239787A (en) * 1986-04-11 1987-10-20 Matsushita Electric Ind Co Ltd Key telephone system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5342603A (en) * 1976-09-30 1978-04-18 Tamura Electric Works Ltd Signal system by voltage discrimination for key telephone set

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5342603A (en) * 1976-09-30 1978-04-18 Tamura Electric Works Ltd Signal system by voltage discrimination for key telephone set

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62239787A (en) * 1986-04-11 1987-10-20 Matsushita Electric Ind Co Ltd Key telephone system
JP2506658B2 (en) * 1986-04-11 1996-06-12 松下電器産業株式会社 Button telephone device

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