JPH0189818U - - Google Patents
Info
- Publication number
- JPH0189818U JPH0189818U JP18534787U JP18534787U JPH0189818U JP H0189818 U JPH0189818 U JP H0189818U JP 18534787 U JP18534787 U JP 18534787U JP 18534787 U JP18534787 U JP 18534787U JP H0189818 U JPH0189818 U JP H0189818U
- Authority
- JP
- Japan
- Prior art keywords
- drilling
- diameter
- hole
- blade
- pilot 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
- 238000005553 drilling Methods 0.000 claims description 14
- 238000004080 punching Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Landscapes
- Punching Or Piercing (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18534787U JPH0189818U (un) | 1987-12-07 | 1987-12-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18534787U JPH0189818U (un) | 1987-12-07 | 1987-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0189818U true JPH0189818U (un) | 1989-06-13 |
Family
ID=31476666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18534787U Pending JPH0189818U (un) | 1987-12-07 | 1987-12-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0189818U (un) |
-
1987
- 1987-12-07 JP JP18534787U patent/JPH0189818U/ja active Pending