DE3761030D1 - Method of and apparatus for providing an underground tunnel - Google Patents

Method of and apparatus for providing an underground tunnel

Info

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
Application number
DE8787304537T
Other languages
German (de)
Inventor
Glen Baker
Albert W Chau
John E Mercer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Utilx Corp
Original Assignee
Flowmole Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US06/866,241 external-priority patent/US4714118A/en
Application filed by Flowmole Corp filed Critical Flowmole Corp
Application granted granted Critical
Publication of DE3761030D1 publication Critical patent/DE3761030D1/en
Expired legal-status Critical Current

Links

DE8787304537T 1986-05-22 1987-05-21 Method of and apparatus for providing an underground tunnel Expired DE3761030D1 (en)

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)

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