Assignee
CRUTCHER RESOURCES
15 granted patents·353 citations·filing 1976–1983
Top patents by PatentIndex Score
15 records- 0193US4308746ALiquid pipeline leak detectionCRUTCHER RESOURCES·Filed 1979·Granted Jan 5, 1982·72 cites·7 claims
- 0284US4201326APivotal back-up pads for weldingCRUTCHER RESOURCES·Filed 1978·Granted May 6, 1980·35 cites·11 claims
- 0381US4352285AHydraulic wedge mandrelCRUTCHER RESOURCES·Filed 1979·Granted Oct 5, 1982·33 cites·15 claims
- 0481US4205407AQuick-change brush headCRUTCHER RESOURCES·Filed 1979·Granted Jun 3, 1980·37 cites·8 claims
- 0577US4380695AControl of torch position and travel in automatic weldingCRUTCHER RESOURCES·Filed 1976·Granted Apr 19, 1983·26 cites·6 claims
- 0673US4495400AMethod and apparatus for positioning a welding torch in automatic electric weldingCRUTCHER RESOURCES·Filed 1982·Granted Jan 22, 1985·23 cites·10 claims
- 0773US4255641AMethod of outside welding of pipelinesCRUTCHER RESOURCES·Filed 1978·Granted Mar 10, 1981·25 cites·6 claims
- 0873US4158124AMethod and apparatus for position and oscillation control in automatic electric weldingCRUTCHER RESOURCES·Filed 1977·Granted Jun 12, 1979·22 cites·12 claims
- 0968US4493203AResilient internal mandrelCRUTCHER RESOURCES·Filed 1983·Granted Jan 15, 1985·21 cites·24 claims
- 1066US4389765APiling removalCRUTCHER RESOURCES·Filed 1981·Granted Jun 28, 1983·34 cites·4 claims
- 1152US4461429ATape machine supportCRUTCHER RESOURCES·Filed 1983·Granted Jul 24, 1984·12 cites·6 claims
- 1241US4165831ABack-up pad for weldingCRUTCHER RESOURCES·Filed 1978·Granted Aug 28, 1979·6 cites·7 claims
- 1337US4446713AApparatus and method for bending insulated pipingCRUTCHER RESOURCES·Filed 1981·Granted May 8, 1984·5 cites·27 claims
- 1427US4446353ACenter tracking welder unit with floating referenceCRUTCHER RESOURCES·Filed 1982·Granted May 1, 1984·1 cites·11 claims
- 1526US4500570APipeline priming method and systemCRUTCHER RESOURCES·Filed 1980·Granted Feb 19, 1985·1 cites·10 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →