JPH0355110U - - Google Patents
Info
- Publication number
- JPH0355110U JPH0355110U JP11631889U JP11631889U JPH0355110U JP H0355110 U JPH0355110 U JP H0355110U JP 11631889 U JP11631889 U JP 11631889U JP 11631889 U JP11631889 U JP 11631889U JP H0355110 U JPH0355110 U JP H0355110U
- Authority
- JP
- Japan
- Prior art keywords
- hole
- protrusions
- corrugated
- drilling
- grooves
- 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
- 238000005553 drilling Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Drilling And Boring (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11631889U JPH0355110U (lm) | 1989-10-03 | 1989-10-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11631889U JPH0355110U (lm) | 1989-10-03 | 1989-10-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0355110U true JPH0355110U (lm) | 1991-05-28 |
Family
ID=31664600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11631889U Pending JPH0355110U (lm) | 1989-10-03 | 1989-10-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0355110U (lm) |
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1989
- 1989-10-03 JP JP11631889U patent/JPH0355110U/ja active Pending