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
Links
- 238000009413 insulation Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8140688U JPH022666U (enExample) | 1988-06-20 | 1988-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8140688U JPH022666U (enExample) | 1988-06-20 | 1988-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH022666U true JPH022666U (enExample) | 1990-01-09 |
Family
ID=31306188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8140688U Pending JPH022666U (enExample) | 1988-06-20 | 1988-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH022666U (enExample) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4982354U (enExample) * | 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 |
-
1988
- 1988-06-20 JP JP8140688U patent/JPH022666U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4982354U (enExample) * | 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 |