JPH01117869U - - Google Patents
Info
- Publication number
- JPH01117869U JPH01117869U JP1231688U JP1231688U JPH01117869U JP H01117869 U JPH01117869 U JP H01117869U JP 1231688 U JP1231688 U JP 1231688U JP 1231688 U JP1231688 U JP 1231688U JP H01117869 U JPH01117869 U JP H01117869U
- Authority
- JP
- Japan
- Prior art keywords
- screw
- center
- protrusion
- screwdriver
- center hole
- 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
- 238000006073 displacement reaction Methods 0.000 claims 1
Landscapes
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1231688U JPH01117869U (de) | 1988-02-01 | 1988-02-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1231688U JPH01117869U (de) | 1988-02-01 | 1988-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01117869U true JPH01117869U (de) | 1989-08-09 |
Family
ID=31221652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1231688U Pending JPH01117869U (de) | 1988-02-01 | 1988-02-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01117869U (de) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4948599B2 (de) * | 1972-03-06 | 1974-12-21 |
-
1988
- 1988-02-01 JP JP1231688U patent/JPH01117869U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4948599B2 (de) * | 1972-03-06 | 1974-12-21 |