JPH02118287U - - Google Patents

Info

Publication number
JPH02118287U
JPH02118287U JP2628289U JP2628289U JPH02118287U JP H02118287 U JPH02118287 U JP H02118287U JP 2628289 U JP2628289 U JP 2628289U JP 2628289 U JP2628289 U JP 2628289U JP H02118287 U JPH02118287 U JP H02118287U
Authority
JP
Japan
Prior art keywords
light
frequency
pair
high frequency
projector
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
JP2628289U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0714949Y2 (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 JP1989026282U priority Critical patent/JPH0714949Y2/ja
Publication of JPH02118287U publication Critical patent/JPH02118287U/ja
Application granted granted Critical
Publication of JPH0714949Y2 publication Critical patent/JPH0714949Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Burglar Alarm Systems (AREA)
JP1989026282U 1989-03-08 1989-03-08 光遮断式検出器 Expired - Lifetime JPH0714949Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989026282U JPH0714949Y2 (ja) 1989-03-08 1989-03-08 光遮断式検出器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989026282U JPH0714949Y2 (ja) 1989-03-08 1989-03-08 光遮断式検出器

Publications (2)

Publication Number Publication Date
JPH02118287U true JPH02118287U (enrdf_load_stackoverflow) 1990-09-21
JPH0714949Y2 JPH0714949Y2 (ja) 1995-04-10

Family

ID=31247768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989026282U Expired - Lifetime JPH0714949Y2 (ja) 1989-03-08 1989-03-08 光遮断式検出器

Country Status (1)

Country Link
JP (1) JPH0714949Y2 (enrdf_load_stackoverflow)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5015157U (enrdf_load_stackoverflow) * 1973-06-01 1975-02-18
JPS55174669U (enrdf_load_stackoverflow) * 1979-05-31 1980-12-15
JPS5921132A (ja) * 1982-07-27 1984-02-03 Matsushita Electric Ind Co Ltd インタ−ホン装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5015157U (enrdf_load_stackoverflow) * 1973-06-01 1975-02-18
JPS55174669U (enrdf_load_stackoverflow) * 1979-05-31 1980-12-15
JPS5921132A (ja) * 1982-07-27 1984-02-03 Matsushita Electric Ind Co Ltd インタ−ホン装置

Also Published As

Publication number Publication date
JPH0714949Y2 (ja) 1995-04-10

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