JPH0447793U - - Google Patents

Info

Publication number
JPH0447793U
JPH0447793U JP8787990U JP8787990U JPH0447793U JP H0447793 U JPH0447793 U JP H0447793U JP 8787990 U JP8787990 U JP 8787990U JP 8787990 U JP8787990 U JP 8787990U JP H0447793 U JPH0447793 U JP H0447793U
Authority
JP
Japan
Prior art keywords
signal
transmitted
transmitting
wave
ultrasonic wave
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
JP8787990U
Other languages
English (en)
Japanese (ja)
Other versions
JP2541456Y2 (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 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 true JPH0447793U (en:Method) 1992-04-23
JP2541456Y2 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 (en:Method)

Also Published As

Publication number Publication date
JP2541456Y2 (ja) 1997-07-16

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Legal Events

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LAPS Cancellation because of no payment of annual fees