JPH01122653U - - Google Patents

Info

Publication number
JPH01122653U
JPH01122653U JP1965988U JP1965988U JPH01122653U JP H01122653 U JPH01122653 U JP H01122653U JP 1965988 U JP1965988 U JP 1965988U JP 1965988 U JP1965988 U JP 1965988U JP H01122653 U JPH01122653 U JP H01122653U
Authority
JP
Japan
Prior art keywords
transmitting
receiving
intercom device
line
howling
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
JP1965988U
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 JP1965988U priority Critical patent/JPH01122653U/ja
Publication of JPH01122653U publication Critical patent/JPH01122653U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP1965988U 1988-02-16 1988-02-16 Pending JPH01122653U (US20110158925A1-20110630-C00042.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1965988U JPH01122653U (US20110158925A1-20110630-C00042.png) 1988-02-16 1988-02-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1965988U JPH01122653U (US20110158925A1-20110630-C00042.png) 1988-02-16 1988-02-16

Publications (1)

Publication Number Publication Date
JPH01122653U true JPH01122653U (US20110158925A1-20110630-C00042.png) 1989-08-21

Family

ID=31235363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1965988U Pending JPH01122653U (US20110158925A1-20110630-C00042.png) 1988-02-16 1988-02-16

Country Status (1)

Country Link
JP (1) JPH01122653U (US20110158925A1-20110630-C00042.png)

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