JPH02113462U - - Google Patents

Info

Publication number
JPH02113462U
JPH02113462U JP2291489U JP2291489U JPH02113462U JP H02113462 U JPH02113462 U JP H02113462U JP 2291489 U JP2291489 U JP 2291489U JP 2291489 U JP2291489 U JP 2291489U JP H02113462 U JPH02113462 U JP H02113462U
Authority
JP
Japan
Prior art keywords
room
slave unit
collective entrance
base unit
voice signal
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
JP2291489U
Other languages
English (en)
Japanese (ja)
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 JP2291489U priority Critical patent/JPH02113462U/ja
Publication of JPH02113462U publication Critical patent/JPH02113462U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
JP2291489U 1989-02-28 1989-02-28 Pending JPH02113462U (US20030157376A1-20030821-M00001.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2291489U JPH02113462U (US20030157376A1-20030821-M00001.png) 1989-02-28 1989-02-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2291489U JPH02113462U (US20030157376A1-20030821-M00001.png) 1989-02-28 1989-02-28

Publications (1)

Publication Number Publication Date
JPH02113462U true JPH02113462U (US20030157376A1-20030821-M00001.png) 1990-09-11

Family

ID=31241455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2291489U Pending JPH02113462U (US20030157376A1-20030821-M00001.png) 1989-02-28 1989-02-28

Country Status (1)

Country Link
JP (1) JPH02113462U (US20030157376A1-20030821-M00001.png)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59175265A (ja) * 1983-03-25 1984-10-04 Citizen Watch Co Ltd 録音機能付インタ−ホン
JPS6260348A (ja) * 1985-09-10 1987-03-17 Sharp Corp ドアホン装置
JPS63238758A (ja) * 1987-03-26 1988-10-04 Matsushita Electric Works Ltd 集合住宅用監視通話システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59175265A (ja) * 1983-03-25 1984-10-04 Citizen Watch Co Ltd 録音機能付インタ−ホン
JPS6260348A (ja) * 1985-09-10 1987-03-17 Sharp Corp ドアホン装置
JPS63238758A (ja) * 1987-03-26 1988-10-04 Matsushita Electric Works Ltd 集合住宅用監視通話システム

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