DE3761030D1 - Method of and apparatus for providing an underground tunnel - Google Patents
Method of and apparatus for providing an underground tunnelInfo
- Publication number
- DE3761030D1 DE3761030D1 DE8787304537T DE3761030T DE3761030D1 DE 3761030 D1 DE3761030 D1 DE 3761030D1 DE 8787304537 T DE8787304537 T DE 8787304537T DE 3761030 T DE3761030 T DE 3761030T DE 3761030 D1 DE3761030 D1 DE 3761030D1
- Authority
- DE
- Germany
- Prior art keywords
- providing
- underground tunnel
- underground
- tunnel
- 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.)
- Expired
Links
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/866,241 US4714118A (en) | 1986-05-22 | 1986-05-22 | Technique for steering and monitoring the orientation of a powered underground boring device |
EP87304537A EP0247799B1 (en) | 1986-05-22 | 1987-05-21 | Method of and apparatus for providing an underground tunnel |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3761030D1 true DE3761030D1 (en) | 1989-12-28 |
Family
ID=26110286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8787304537T Expired DE3761030D1 (en) | 1986-05-22 | 1987-05-21 | Method of and apparatus for providing an underground tunnel |
Country Status (3)
Country | Link |
---|---|
AT (1) | ATE48180T1 (en) |
DE (1) | DE3761030D1 (en) |
GR (1) | GR3000225T3 (en) |
-
1987
- 1987-05-21 AT AT87304537T patent/ATE48180T1/en active
- 1987-05-21 DE DE8787304537T patent/DE3761030D1/en not_active Expired
-
1989
- 1989-11-24 GR GR89400231T patent/GR3000225T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
GR3000225T3 (en) | 1991-03-15 |
ATE48180T1 (en) | 1989-12-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: UTILX CORP., KENT, WASH., US |
|
8339 | Ceased/non-payment of the annual fee |