Assignee
TERRA AG TIEFBAUTECHNIK
CH·15 granted patents·233 citations·filing 1988–2001
Top patents by PatentIndex Score
15 records- 0157US6098708AApparatus for pulling a pipe into an earth boreTERRA AG TIEFBAUTECHNIK·Filed 1998·Granted Aug 8, 2000·36 cites·9 claims
- 0253US5339909AApparatus for making earth boresTERRA AG TIEFBAUTECHNIK·Filed 1992·Granted Aug 23, 1994·27 cites·15 claims
- 0351US5913371AApparatus for controlling the feed drive of a boring mechanism for making earth boresTERRA AG TIEFBAUTECHNIK·Filed 1997·Granted Jun 22, 1999·28 cites·3 claims
- 0451US5288173AMethod for the directional control of an earth boring device as well as apparatus for making earth boresTERRA AG TIEFBAUTECHNIK·Filed 1992·Granted Feb 22, 1994·25 cites·6 claims
- 0549US5301758AMethod and apparatus for enlarging a bore holeTERRA AG TIEFBAUTECHNIK·Filed 1991·Granted Apr 12, 1994·22 cites·16 claims
- 0646US6189628B1Earth borer system with drill-rod changerTERRA AG TIEFBAUTECHNIK·Filed 1999·Granted Feb 20, 2001·23 cites·15 claims
- 0740US6591921B2Horizontal boring apparatusTERRA AG TIEFBAUTECHNIK·Filed 2001·Granted Jul 15, 2003·3 cites·10 claims
- 0840US6588315B2Ram deviceTERRA AG TIEFBAUTECHNIK·Filed 2000·Granted Jul 8, 2003·3 cites·5 claims
- 0940US5050686APercussion drillTERRA AG TIEFBAUTECHNIK·Filed 1989·Granted Sep 24, 1991·12 cites·6 claims
- 1038US5492184AEarth boring deviceTERRA AG TIEFBAUTECHNIK·Filed 1994·Granted Feb 20, 1996·12 cites·8 claims
- 1137US6050347AIn Hole hammerTERRA AG TIEFBAUTECHNIK·Filed 1997·Granted Apr 18, 2000·13 cites·5 claims
- 1236US6202758B1Compact boring apparatus for making earth boresTERRA AG TIEFBAUTECHNIK·Filed 1999·Granted Mar 20, 2001·11 cites·7 claims
- 1336US4913243APercussion drill and method of controlling sameTERRA AG TIEFBAUTECHNIK·Filed 1988·Granted Apr 3, 1990·9 cites·14 claims
- 1431US5526886ARam boring deviceTERRA AG TIEFBAUTECHNIK·Filed 1994·Granted Jun 18, 1996·5 cites·7 claims
- 1530US5711384AAnchoring apparatus for the boring wagon of a mobile earth boring mechanismTERRA AG TIEFBAUTECHNIK·Filed 1996·Granted Jan 27, 1998·4 cites·12 claims
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