JPS63171490U - - Google Patents
Info
- Publication number
- JPS63171490U JPS63171490U JP6505987U JP6505987U JPS63171490U JP S63171490 U JPS63171490 U JP S63171490U JP 6505987 U JP6505987 U JP 6505987U JP 6505987 U JP6505987 U JP 6505987U JP S63171490 U JPS63171490 U JP S63171490U
- Authority
- JP
- Japan
- Prior art keywords
- wellhead
- annular packing
- pipe body
- propulsion
- outer periphery
- 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
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987065059U JPH0512391Y2 (en]) | 1987-04-28 | 1987-04-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987065059U JPH0512391Y2 (en]) | 1987-04-28 | 1987-04-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63171490U true JPS63171490U (en]) | 1988-11-08 |
| JPH0512391Y2 JPH0512391Y2 (en]) | 1993-03-30 |
Family
ID=30901787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987065059U Expired - Lifetime JPH0512391Y2 (en]) | 1987-04-28 | 1987-04-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0512391Y2 (en]) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS523871U (en]) * | 1975-06-24 | 1977-01-12 |
-
1987
- 1987-04-28 JP JP1987065059U patent/JPH0512391Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS523871U (en]) * | 1975-06-24 | 1977-01-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0512391Y2 (en]) | 1993-03-30 |