JPH022666U - - Google Patents

Info

Publication number
JPH022666U
JPH022666U JP8140688U JP8140688U JPH022666U JP H022666 U JPH022666 U JP H022666U JP 8140688 U JP8140688 U JP 8140688U JP 8140688 U JP8140688 U JP 8140688U JP H022666 U JPH022666 U JP H022666U
Authority
JP
Japan
Prior art keywords
sound
microphone
amplifier
filter
attenuator
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
JP8140688U
Other languages
English (en)
Japanese (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 JP8140688U priority Critical patent/JPH022666U/ja
Publication of JPH022666U publication Critical patent/JPH022666U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
JP8140688U 1988-06-20 1988-06-20 Pending JPH022666U (US07488766-20090210-C00029.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8140688U JPH022666U (US07488766-20090210-C00029.png) 1988-06-20 1988-06-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8140688U JPH022666U (US07488766-20090210-C00029.png) 1988-06-20 1988-06-20

Publications (1)

Publication Number Publication Date
JPH022666U true JPH022666U (US07488766-20090210-C00029.png) 1990-01-09

Family

ID=31306188

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8140688U Pending JPH022666U (US07488766-20090210-C00029.png) 1988-06-20 1988-06-20

Country Status (1)

Country Link
JP (1) JPH022666U (US07488766-20090210-C00029.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4982354U (US07488766-20090210-C00029.png) * 1972-11-06 1974-07-17
JP2009216585A (ja) * 2008-03-11 2009-09-24 Hitachi Information & Communication Engineering Ltd 管長測定システム及びその測定方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4982354U (US07488766-20090210-C00029.png) * 1972-11-06 1974-07-17
JP2009216585A (ja) * 2008-03-11 2009-09-24 Hitachi Information & Communication Engineering Ltd 管長測定システム及びその測定方法

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