Assignee
HARD ROCK DRILLING & FABRICATI
US·5 granted patents·67 citations·filing 2002–2002
Technology mixE21B5
Top patents by PatentIndex Score
5 records- 0155US6827159B2Steerable horizontal subterranean drill bit having an offset drilling fluid sealHARD ROCK DRILLING & FABRICATI·Filed 2002·Granted Dec 7, 2004·21 cites·21 claims
- 0251US6810971B1Steerable horizontal subterranean drill bitHARD ROCK DRILLING & FABRICATI·Filed 2002·Granted Nov 2, 2004·16 cites·32 claims
- 0347US6810972B2Steerable horizontal subterranean drill bit having a one bolt attachment systemHARD ROCK DRILLING & FABRICATI·Filed 2002·Granted Nov 2, 2004·12 cites·21 claims
- 0445US6810973B2Steerable horizontal subterranean drill bit having offset cutting tooth pathsHARD ROCK DRILLING & FABRICATI·Filed 2002·Granted Nov 2, 2004·10 cites·20 claims
- 0543US6814168B2Steerable horizontal subterranean drill bit having elevated wear protector receptaclesHARD ROCK DRILLING & FABRICATI·Filed 2002·Granted Nov 9, 2004·8 cites·21 claims
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