JPS6225009Y2 - - Google Patents

Info

Publication number
JPS6225009Y2
JPS6225009Y2 JP1979183307U JP18330779U JPS6225009Y2 JP S6225009 Y2 JPS6225009 Y2 JP S6225009Y2 JP 1979183307 U JP1979183307 U JP 1979183307U JP 18330779 U JP18330779 U JP 18330779U JP S6225009 Y2 JPS6225009 Y2 JP S6225009Y2
Authority
JP
Japan
Prior art keywords
door intercom
wire
intercom handset
handset
door
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
JP1979183307U
Other languages
English (en)
Japanese (ja)
Other versions
JPS5699964U (OSRAM
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 filed Critical
Priority to JP1979183307U priority Critical patent/JPS6225009Y2/ja
Publication of JPS5699964U publication Critical patent/JPS5699964U/ja
Application granted granted Critical
Publication of JPS6225009Y2 publication Critical patent/JPS6225009Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP1979183307U 1979-12-28 1979-12-28 Expired JPS6225009Y2 (OSRAM)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1979183307U JPS6225009Y2 (OSRAM) 1979-12-28 1979-12-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1979183307U JPS6225009Y2 (OSRAM) 1979-12-28 1979-12-28

Publications (2)

Publication Number Publication Date
JPS5699964U JPS5699964U (OSRAM) 1981-08-06
JPS6225009Y2 true JPS6225009Y2 (OSRAM) 1987-06-26

Family

ID=29693610

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1979183307U Expired JPS6225009Y2 (OSRAM) 1979-12-28 1979-12-28

Country Status (1)

Country Link
JP (1) JPS6225009Y2 (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4895241B1 (ja) * 2011-01-14 2012-03-14 Ｎｅｃインフロンティア株式会社 インタフェース回路及び主装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5113507A (OSRAM) * 1974-07-24 1976-02-03 Matsushita Electric Industrial Co Ltd
US3993880A (en) * 1976-02-09 1976-11-23 Bell Telephone Laboratories, Incorporated Resistive battery feed for line circuits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4895241B1 (ja) * 2011-01-14 2012-03-14 Ｎｅｃインフロンティア株式会社 インタフェース回路及び主装置
US8718274B2 (en) 2011-01-14 2014-05-06 Nec Infrontia Corporation Interface circuit and main device

Also Published As

Publication number Publication date
JPS5699964U (OSRAM) 1981-08-06

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