Assignee
NAT MINE SERVICE CO
27 granted patents·424 citations·filing 1975–1985
Top patents by PatentIndex Score
27 records- 0194US4299424ACutting tool assemblyNAT MINE SERVICE CO·Filed 1979·Granted Nov 10, 1981·63 cites·9 claims
- 0288US4090601AMining machine conveyor and apparatus for controlling the tension thereonNAT MINE SERVICE CO·Filed 1976·Granted May 23, 1978·37 cites·9 claims
- 0387US4245525ALimited slip differentialNAT MINE SERVICE CO·Filed 1978·Granted Jan 20, 1981·36 cites·8 claims
- 0470US4088371ABoom stabilizer for an underground mining machineNAT MINE SERVICE CO·Filed 1977·Granted May 9, 1978·14 cites·9 claims
- 0569US4538941ARock duster apparatusNAT MINE SERVICE CO·Filed 1983·Granted Sep 3, 1985·25 cites·9 claims
- 0669US4310199ACutter drum assembly for a continuous mining machineNAT MINE SERVICE CO·Filed 1979·Granted Jan 12, 1982·15 cites·15 claims
- 0769US4221363AAdjustable jackNAT MINE SERVICE CO·Filed 1978·Granted Sep 9, 1980·27 cites·12 claims
- 0868US4056189AMaterial gathering device for a mining machineNAT MINE SERVICE CO·Filed 1975·Granted Nov 1, 1977·14 cites·9 claims
- 0966US4281879AStabilizing assembly for a mining machineNAT MINE SERVICE CO·Filed 1979·Granted Aug 4, 1981·12 cites·6 claims
- 1064US4556200ARe-railing jackNAT MINE SERVICE CO·Filed 1983·Granted Dec 3, 1985·28 cites·12 claims
- 1163US4253705AContinuous mining machine having a boom member with a fixed material dislodging meansNAT MINE SERVICE CO·Filed 1979·Granted Mar 3, 1981·10 cites·11 claims
- 1263US4076316AContinuous mining machine with laterally movable cutter drum memberNAT MINE SERVICE CO·Filed 1976·Granted Feb 28, 1978·10 cites·8 claims
- 1361US4270803ACutter drum drive assembly for canted end sectionsNAT MINE SERVICE CO·Filed 1979·Granted Jun 2, 1981·11 cites·22 claims
- 1457US4225189AContinuous mining machine and cutter drum drive thereforNAT MINE SERVICE CO·Filed 1978·Granted Sep 30, 1980·8 cites·8 claims
- 1551US4296856AMaterial gathering device for a mining machineNAT MINE SERVICE CO·Filed 1980·Granted Oct 27, 1981·16 cites·9 claims
- 1650US4316635AExtensible and retraciable rotor arm cutting assemblyNAT MINE SERVICE CO·Filed 1980·Granted Feb 23, 1982·16 cites·8 claims
- 1744US4089403ASwivel assembly for a conveyorNAT MINE SERVICE CO·Filed 1976·Granted May 16, 1978·8 cites·14 claims
- 1843US4531784AMining machine with dust collector apparatusNAT MINE SERVICE CO·Filed 1983·Granted Jul 30, 1985·18 cites·10 claims
- 1941US4332772APortable gas detectorNAT MINE SERVICE CO·Filed 1981·Granted Jun 1, 1982·8 cites·2 claims
- 2038US4633147AElectric powered vehicle and method of propelling the sameNAT MINE SERVICE CO·Filed 1985·Granted Dec 30, 1986·9 cites·25 claims
- 2136US4087734ACharging circuit for combination trolley and battery powered locomotivesNAT MINE SERVICE CO·Filed 1975·Granted May 2, 1978·14 cites·9 claims
- 2234US4339153AApparatus for extending and retracting the cutter bars of a boring type mining machineNAT MINE SERVICE CO·Filed 1980·Granted Jul 13, 1982·7 cites·8 claims
- 2333US4582363ADrive assembly for mining machine cutter drumNAT MINE SERVICE CO·Filed 1984·Granted Apr 15, 1986·6 cites·12 claims
- 2433US4380354AMining machine loading bin mounted on boom structure and methodNAT MINE SERVICE CO·Filed 1981·Granted Apr 19, 1983·4 cites·19 claims
- 2531US4641888AMaterial gathering device for a mining machineNAT MINE SERVICE CO·Filed 1985·Granted Feb 10, 1987·3 cites·4 claims
- 2627US4315956AProcess for depositing cobalt ondes on a refractory-coated platinum resistor coilNAT MINE SERVICE CO·Filed 1980·Granted Feb 16, 1982·1 cites·1 claims
- 2726US4546849AMachine operators compartmentNAT MINE SERVICE CO·Filed 1984·Granted Oct 15, 1985·4 cites·20 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →