JPH0314480U - - Google Patents
Info
- Publication number
- JPH0314480U JPH0314480U JP7473789U JP7473789U JPH0314480U JP H0314480 U JPH0314480 U JP H0314480U JP 7473789 U JP7473789 U JP 7473789U JP 7473789 U JP7473789 U JP 7473789U JP H0314480 U JPH0314480 U JP H0314480U
- Authority
- JP
- Japan
- Prior art keywords
- sound wave
- propagation path
- sound
- wave propagation
- obstacle detection
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7473789U JPH0314480U (en]) | 1989-06-26 | 1989-06-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7473789U JPH0314480U (en]) | 1989-06-26 | 1989-06-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0314480U true JPH0314480U (en]) | 1991-02-14 |
Family
ID=31614691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7473789U Pending JPH0314480U (en]) | 1989-06-26 | 1989-06-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0314480U (en]) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5549241B2 (en]) * | 1976-04-27 | 1980-12-11 |
-
1989
- 1989-06-26 JP JP7473789U patent/JPH0314480U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5549241B2 (en]) * | 1976-04-27 | 1980-12-11 |
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