JPH01144992U - - Google Patents

Info

Publication number
JPH01144992U
JPH01144992U JP3830488U JP3830488U JPH01144992U JP H01144992 U JPH01144992 U JP H01144992U JP 3830488 U JP3830488 U JP 3830488U JP 3830488 U JP3830488 U JP 3830488U JP H01144992 U JPH01144992 U JP H01144992U
Authority
JP
Japan
Prior art keywords
level
fire alarm
light source
reference light
optical window
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.)
Granted
Application number
JP3830488U
Other languages
English (en)
Japanese (ja)
Other versions
JP2507204Y2 (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 JP1988038304U priority Critical patent/JP2507204Y2/ja
Publication of JPH01144992U publication Critical patent/JPH01144992U/ja
Application granted granted Critical
Publication of JP2507204Y2 publication Critical patent/JP2507204Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
JP1988038304U 1988-03-25 1988-03-25 火災警報装置 Expired - Lifetime JP2507204Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988038304U JP2507204Y2 (ja) 1988-03-25 1988-03-25 火災警報装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988038304U JP2507204Y2 (ja) 1988-03-25 1988-03-25 火災警報装置

Publications (2)

Publication Number Publication Date
JPH01144992U true JPH01144992U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1989-10-05
JP2507204Y2 JP2507204Y2 (ja) 1996-08-14

Family

ID=31264862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988038304U Expired - Lifetime JP2507204Y2 (ja) 1988-03-25 1988-03-25 火災警報装置

Country Status (1)

Country Link
JP (1) JP2507204Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04367999A (ja) * 1991-06-15 1992-12-21 Nittan Co Ltd 炎感知装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56133548U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1980-03-10 1981-10-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56133548U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1980-03-10 1981-10-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04367999A (ja) * 1991-06-15 1992-12-21 Nittan Co Ltd 炎感知装置

Also Published As

Publication number Publication date
JP2507204Y2 (ja) 1996-08-14

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