JP2541456Y2 - 超音波警報器 - Google Patents

超音波警報器

Info

Publication number
JP2541456Y2
JP2541456Y2 JP8787990U JP8787990U JP2541456Y2 JP 2541456 Y2 JP2541456 Y2 JP 2541456Y2 JP 8787990 U JP8787990 U JP 8787990U JP 8787990 U JP8787990 U JP 8787990U JP 2541456 Y2 JP2541456 Y2 JP 2541456Y2
Authority
JP
Japan
Prior art keywords
signal
frequency
unit
received
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.)
Expired - Fee Related
Application number
JP8787990U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0447793U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
正宏 臼井
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.)
Sohgo Security Services Co Ltd
Original Assignee
Sohgo Security Services Co 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 Sohgo Security Services Co Ltd filed Critical Sohgo Security Services Co Ltd
Priority to JP8787990U priority Critical patent/JP2541456Y2/ja
Publication of JPH0447793U publication Critical patent/JPH0447793U/ja
Application granted granted Critical
Publication of JP2541456Y2 publication Critical patent/JP2541456Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Burglar Alarm Systems (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
JP8787990U 1990-08-24 1990-08-24 超音波警報器 Expired - Fee Related JP2541456Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8787990U JP2541456Y2 (ja) 1990-08-24 1990-08-24 超音波警報器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8787990U JP2541456Y2 (ja) 1990-08-24 1990-08-24 超音波警報器

Publications (2)

Publication Number Publication Date
JPH0447793U JPH0447793U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-04-23
JP2541456Y2 true JP2541456Y2 (ja) 1997-07-16

Family

ID=31820624

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8787990U Expired - Fee Related JP2541456Y2 (ja) 1990-08-24 1990-08-24 超音波警報器

Country Status (1)

Country Link
JP (1) JP2541456Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Also Published As

Publication number Publication date
JPH0447793U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-04-23

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees