JPH01120528U - - Google Patents
Info
- Publication number
- JPH01120528U JPH01120528U JP1503788U JP1503788U JPH01120528U JP H01120528 U JPH01120528 U JP H01120528U JP 1503788 U JP1503788 U JP 1503788U JP 1503788 U JP1503788 U JP 1503788U JP H01120528 U JPH01120528 U JP H01120528U
- Authority
- JP
- Japan
- Prior art keywords
- block
- inverted
- ridge
- shaped groove
- longitudinal direction
- 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
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
Landscapes
- Sewage (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1503788U JPH01120528U (es) | 1988-02-05 | 1988-02-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1503788U JPH01120528U (es) | 1988-02-05 | 1988-02-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01120528U true JPH01120528U (es) | 1989-08-15 |
Family
ID=31226744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1503788U Pending JPH01120528U (es) | 1988-02-05 | 1988-02-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01120528U (es) |
-
1988
- 1988-02-05 JP JP1503788U patent/JPH01120528U/ja active Pending