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JPS57172496A - Sound alarm device - Google Patents

Sound alarm device

Info

Publication number
JPS57172496A
JPS57172496A JP5711281A JP5711281A JPS57172496A JP S57172496 A JPS57172496 A JP S57172496A JP 5711281 A JP5711281 A JP 5711281A JP 5711281 A JP5711281 A JP 5711281A JP S57172496 A JPS57172496 A JP S57172496A
Authority
JP
Japan
Prior art keywords
alarm device
sound alarm
sound
alarm
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
JP5711281A
Other languages
Japanese (ja)
Inventor
Yukio Nagaoka
Shiyouichi Kishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5711281A priority Critical patent/JPS57172496A/en
Publication of JPS57172496A publication Critical patent/JPS57172496A/en
Pending legal-status Critical Current

Links

Landscapes

  • Audible And Visible Signals (AREA)
  • Alarm Systems (AREA)
JP5711281A 1981-04-17 1981-04-17 Sound alarm device Pending JPS57172496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5711281A JPS57172496A (en) 1981-04-17 1981-04-17 Sound alarm device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5711281A JPS57172496A (en) 1981-04-17 1981-04-17 Sound alarm device

Publications (1)

Publication Number Publication Date
JPS57172496A true JPS57172496A (en) 1982-10-23

Family

ID=13046434

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5711281A Pending JPS57172496A (en) 1981-04-17 1981-04-17 Sound alarm device

Country Status (1)

Country Link
JP (1) JPS57172496A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6377537A (en) * 1986-09-19 1988-04-07 Jgc Corp Plant operation supporting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6377537A (en) * 1986-09-19 1988-04-07 Jgc Corp Plant operation supporting device
JPH0437733B2 (en) * 1986-09-19 1992-06-22 Jgc Corp

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