Inventor · disambiguated record
Earl C. Michael
Also filed as: MICHAEL EARL C
3 granted patents·27 citations·filing 1980–1984
68Inventor score
Technology areasE21C
Files withNAT MINE SERVICE CO3
Top patents by PatentIndex Score
3 records- 0150US4316635AExtensible and retraciable rotor arm cutting assemblyNAT MINE SERVICE CO·Filed 1980·Granted Feb 23, 1982·16 cites·8 claims
- 0234US4339153AApparatus 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
- 0326US4546849AMachine operators compartmentNAT MINE SERVICE CO·Filed 1984·Granted Oct 15, 1985·4 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →