JPH0424083U - - Google Patents
Info
- Publication number
- JPH0424083U JPH0424083U JP6434790U JP6434790U JPH0424083U JP H0424083 U JPH0424083 U JP H0424083U JP 6434790 U JP6434790 U JP 6434790U JP 6434790 U JP6434790 U JP 6434790U JP H0424083 U JPH0424083 U JP H0424083U
- Authority
- JP
- Japan
- Prior art keywords
- sound source
- reflector
- ultrasonic reflector
- ultrasonic
- reflecting
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Burglar Alarm Systems (AREA)
- Emergency Alarm Devices (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6434790U JPH0424083U (cs) | 1990-06-18 | 1990-06-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6434790U JPH0424083U (cs) | 1990-06-18 | 1990-06-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0424083U true JPH0424083U (cs) | 1992-02-27 |
Family
ID=31595212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6434790U Pending JPH0424083U (cs) | 1990-06-18 | 1990-06-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0424083U (cs) |
-
1990
- 1990-06-18 JP JP6434790U patent/JPH0424083U/ja active Pending
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