JPS6142237Y2 - - Google Patents

Info

Publication number
JPS6142237Y2
JPS6142237Y2 JP1977154951U JP15495177U JPS6142237Y2 JP S6142237 Y2 JPS6142237 Y2 JP S6142237Y2 JP 1977154951 U JP1977154951 U JP 1977154951U JP 15495177 U JP15495177 U JP 15495177U JP S6142237 Y2 JPS6142237 Y2 JP S6142237Y2
Authority
JP
Japan
Prior art keywords
amplifier
microphone
speaker
intercom
notification 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.)
Expired
Application number
JP1977154951U
Other languages
English (en)
Japanese (ja)
Other versions
JPS5483308U (en]
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 JP1977154951U priority Critical patent/JPS6142237Y2/ja
Publication of JPS5483308U publication Critical patent/JPS5483308U/ja
Application granted granted Critical
Publication of JPS6142237Y2 publication Critical patent/JPS6142237Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Burglar Alarm Systems (AREA)
  • Alarm Systems (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Selective Calling Equipment (AREA)
JP1977154951U 1977-11-17 1977-11-17 Expired JPS6142237Y2 (en])

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1977154951U JPS6142237Y2 (en]) 1977-11-17 1977-11-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1977154951U JPS6142237Y2 (en]) 1977-11-17 1977-11-17

Publications (2)

Publication Number Publication Date
JPS5483308U JPS5483308U (en]) 1979-06-13
JPS6142237Y2 true JPS6142237Y2 (en]) 1986-12-01

Family

ID=29143530

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1977154951U Expired JPS6142237Y2 (en]) 1977-11-17 1977-11-17

Country Status (1)

Country Link
JP (1) JPS6142237Y2 (en])

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS487665U (en]) * 1971-06-12 1973-01-27

Also Published As

Publication number Publication date
JPS5483308U (en]) 1979-06-13

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