JPH03122187U - - Google Patents
Info
- Publication number
- JPH03122187U JPH03122187U JP3076290U JP3076290U JPH03122187U JP H03122187 U JPH03122187 U JP H03122187U JP 3076290 U JP3076290 U JP 3076290U JP 3076290 U JP3076290 U JP 3076290U JP H03122187 U JPH03122187 U JP H03122187U
- Authority
- JP
- Japan
- Prior art keywords
- ring body
- ring
- tip
- bit
- double pipe
- 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
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990030762U JPH0732622Y2 (ja) | 1990-03-26 | 1990-03-26 | 二重管式掘削工具 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990030762U JPH0732622Y2 (ja) | 1990-03-26 | 1990-03-26 | 二重管式掘削工具 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03122187U true JPH03122187U (de) | 1991-12-13 |
JPH0732622Y2 JPH0732622Y2 (ja) | 1995-07-26 |
Family
ID=31533470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1990030762U Expired - Lifetime JPH0732622Y2 (ja) | 1990-03-26 | 1990-03-26 | 二重管式掘削工具 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0732622Y2 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014162709A1 (ja) * | 2013-04-01 | 2014-10-09 | 株式会社ミヤナガ | 鉄筋穿孔ドリル |
JP2016121497A (ja) * | 2014-12-25 | 2016-07-07 | 株式会社大林組 | リングビット |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63151592U (de) * | 1987-03-19 | 1988-10-05 | ||
JPH01120592U (de) * | 1988-02-09 | 1989-08-15 |
-
1990
- 1990-03-26 JP JP1990030762U patent/JPH0732622Y2/ja not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63151592U (de) * | 1987-03-19 | 1988-10-05 | ||
JPH01120592U (de) * | 1988-02-09 | 1989-08-15 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014162709A1 (ja) * | 2013-04-01 | 2014-10-09 | 株式会社ミヤナガ | 鉄筋穿孔ドリル |
JP2016121497A (ja) * | 2014-12-25 | 2016-07-07 | 株式会社大林組 | リングビット |
Also Published As
Publication number | Publication date |
---|---|
JPH0732622Y2 (ja) | 1995-07-26 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |