Assignee
MARCHAND NICHOLAS
CA·2 granted patents·20 citations·filing 2011–2011
Top patents by PatentIndex Score
2 records- 0188US9163457B2Pressure compensation system for an oil-sealed mud motor bearing assemblyMARCHAND NICHOLAS·Filed 2011·Granted Oct 20, 2015·7 cites·20 claims
- 0286US8511906B2Oil-sealed mud motor bearing assembly with mud-lubricated off-bottom thrust bearingMARCHAND NICHOLAS·Filed 2011·Granted Aug 20, 2013·13 cites·12 claims
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