JPS63161990U - - Google Patents
Info
- Publication number
- JPS63161990U JPS63161990U JP1987050778U JP5077887U JPS63161990U JP S63161990 U JPS63161990 U JP S63161990U JP 1987050778 U JP1987050778 U JP 1987050778U JP 5077887 U JP5077887 U JP 5077887U JP S63161990 U JPS63161990 U JP S63161990U
- Authority
- JP
- Japan
- Prior art keywords
- passage
- water
- bit
- air
- casing
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000009412 basement excavation Methods 0.000 claims 2
- 238000007599 discharging Methods 0.000 claims 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987050778U JPS63161990U (ko) | 1987-04-03 | 1987-04-03 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987050778U JPS63161990U (ko) | 1987-04-03 | 1987-04-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63161990U true JPS63161990U (ko) | 1988-10-21 |
Family
ID=30874445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987050778U Pending JPS63161990U (ko) | 1987-04-03 | 1987-04-03 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63161990U (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02120493A (ja) * | 1988-10-26 | 1990-05-08 | Koken Shisui Kogyo Kk | ダウンザホールドリル |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS477682A (ko) * | 1970-09-24 | 1972-04-24 | ||
JPS6239994B2 (ko) * | 1983-02-02 | 1987-08-26 | Kikunoka Shuzo Kk |
-
1987
- 1987-04-03 JP JP1987050778U patent/JPS63161990U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS477682A (ko) * | 1970-09-24 | 1972-04-24 | ||
JPS6239994B2 (ko) * | 1983-02-02 | 1987-08-26 | Kikunoka Shuzo Kk |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02120493A (ja) * | 1988-10-26 | 1990-05-08 | Koken Shisui Kogyo Kk | ダウンザホールドリル |
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