JPS6442652U - - Google Patents

Info

Publication number
JPS6442652U
JPS6442652U JP13766887U JP13766887U JPS6442652U JP S6442652 U JPS6442652 U JP S6442652U JP 13766887 U JP13766887 U JP 13766887U JP 13766887 U JP13766887 U JP 13766887U JP S6442652 U JPS6442652 U JP S6442652U
Authority
JP
Japan
Prior art keywords
address unit
public address
warning sound
outside line
circuit
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
JP13766887U
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 JP13766887U priority Critical patent/JPS6442652U/ja
Publication of JPS6442652U publication Critical patent/JPS6442652U/ja
Pending legal-status Critical Current

Links

JP13766887U 1987-09-08 1987-09-08 Pending JPS6442652U (enEXAMPLES)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13766887U JPS6442652U (enEXAMPLES) 1987-09-08 1987-09-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13766887U JPS6442652U (enEXAMPLES) 1987-09-08 1987-09-08

Publications (1)

Publication Number Publication Date
JPS6442652U true JPS6442652U (enEXAMPLES) 1989-03-14

Family

ID=31399299

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13766887U Pending JPS6442652U (enEXAMPLES) 1987-09-08 1987-09-08

Country Status (1)

Country Link
JP (1) JPS6442652U (enEXAMPLES)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0470245A (ja) * 1990-07-11 1992-03-05 Noboru Denki Seisakusho:Kk 構内放送ユニット

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53101208A (en) * 1977-02-16 1978-09-04 Nec Corp Transmission system for paging chime sound
JPS5799072A (en) * 1980-11-10 1982-06-19 Hitachi Ltd Paging trunk
JPS585072A (ja) * 1981-07-02 1983-01-12 Nec Corp ボタン電話装置における一斉呼出方式

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53101208A (en) * 1977-02-16 1978-09-04 Nec Corp Transmission system for paging chime sound
JPS5799072A (en) * 1980-11-10 1982-06-19 Hitachi Ltd Paging trunk
JPS585072A (ja) * 1981-07-02 1983-01-12 Nec Corp ボタン電話装置における一斉呼出方式

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0470245A (ja) * 1990-07-11 1992-03-05 Noboru Denki Seisakusho:Kk 構内放送ユニット

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