Assignee
EMPIRE OIL TOOL CO
6 granted patents·53 citations·filing 1975–1977
Top patents by PatentIndex Score
6 records- 0158US3966369AInlet and outlet ports and sealing means for a fluid driven motorEMPIRE OIL TOOL CO·Filed 1975·Granted Jun 29, 1976·16 cites·10 claims
- 0256US3986370AApparatus for connecting motors in tandemEMPIRE OIL TOOL CO·Filed 1975·Granted Oct 19, 1976·14 cites·11 claims
- 0345US4090574AGear system for an oil well driveEMPIRE OIL TOOL CO·Filed 1976·Granted May 23, 1978·8 cites·2 claims
- 0444US4108023AGear systemEMPIRE OIL TOOL CO·Filed 1977·Granted Aug 22, 1978·7 cites·2 claims
- 0542US3976408AFluid driven motor having improved blade constructionEMPIRE OIL TOOL CO·Filed 1975·Granted Aug 24, 1976·5 cites·12 claims
- 0630US4086788ADrive having a plurality of thrust bearingsEMPIRE OIL TOOL CO·Filed 1977·Granted May 2, 1978·3 cites·5 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →