Assignee
UNDERGROUND TECHNOLOGIES
US·3 granted patents·79 citations·filing 1987–1990
Technology mixE21B3
Top patents by PatentIndex Score
3 records- 0164US4955439ASelf-propelled subsoil penetrating tool systemUNDERGROUND TECHNOLOGIES·Filed 1988·Granted Sep 11, 1990·23 cites·5 claims
- 0261US5111891ABoring head for a subsurface soil-boring apparatusUNDERGROUND TECHNOLOGIES·Filed 1990·Granted May 12, 1992·38 cites·20 claims
- 0358US4905773ASelf-propelled subsoil penetrating tool systemUNDERGROUND TECHNOLOGIES·Filed 1987·Granted Mar 6, 1990·18 cites·30 claims
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