JPH0252504U - - Google Patents
Info
- Publication number
- JPH0252504U JPH0252504U JP13085188U JP13085188U JPH0252504U JP H0252504 U JPH0252504 U JP H0252504U JP 13085188 U JP13085188 U JP 13085188U JP 13085188 U JP13085188 U JP 13085188U JP H0252504 U JPH0252504 U JP H0252504U
- Authority
- JP
- Japan
- Prior art keywords
- excavation
- annular
- circumferential surface
- mechanism according
- annular groove
- 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.)
- Granted
Links
- 238000009412 basement excavation Methods 0.000 claims description 10
- 239000002689 soil Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims 1
Landscapes
- Soil Working Implements (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13085188U JPH0547540Y2 (OSRAM) | 1988-10-05 | 1988-10-05 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13085188U JPH0547540Y2 (OSRAM) | 1988-10-05 | 1988-10-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0252504U true JPH0252504U (OSRAM) | 1990-04-16 |
JPH0547540Y2 JPH0547540Y2 (OSRAM) | 1993-12-15 |
Family
ID=31386386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13085188U Expired - Lifetime JPH0547540Y2 (OSRAM) | 1988-10-05 | 1988-10-05 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0547540Y2 (OSRAM) |
-
1988
- 1988-10-05 JP JP13085188U patent/JPH0547540Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0547540Y2 (OSRAM) | 1993-12-15 |