JPS62143730U - - Google Patents
Info
- Publication number
- JPS62143730U JPS62143730U JP2755686U JP2755686U JPS62143730U JP S62143730 U JPS62143730 U JP S62143730U JP 2755686 U JP2755686 U JP 2755686U JP 2755686 U JP2755686 U JP 2755686U JP S62143730 U JPS62143730 U JP S62143730U
- Authority
- JP
- Japan
- Prior art keywords
- gate
- dam gate
- low frequency
- prevention device
- frequency sound
- 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
- 230000002265 prevention Effects 0.000 claims description 2
Landscapes
- Barrages (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2755686U JPS62143730U (xx) | 1986-02-28 | 1986-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2755686U JPS62143730U (xx) | 1986-02-28 | 1986-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62143730U true JPS62143730U (xx) | 1987-09-10 |
Family
ID=30829703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2755686U Pending JPS62143730U (xx) | 1986-02-28 | 1986-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62143730U (xx) |
-
1986
- 1986-02-28 JP JP2755686U patent/JPS62143730U/ja active Pending