Drilling apparatus

A drilling apparatus including a housing, a drill bit having a head end, a connection end, and a bearing mandrel between the head end and the connection end, a bearing pack associated with the bearing mandrel and the housing for transmitting forces between the drill bit and the housing, the bearing...

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Bibliographische Detailangaben
1. Verfasser: GILLIS SEAN
Format: Patent
Sprache:eng
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