Inventor
MICHAEL EARL C
3 patents
Patents
3 patentsUS4339153AJul 13, 1982
Apparatus for extending and retracting the cutter bars of a boring type mining machine
NAT MINE SERVICE CO7 citations71
US4316635AFeb 23, 1982
Extensible and retraciable rotor arm cutting assembly
NAT MINE SERVICE CO16 citations71
US4546849AOct 15, 1985
Machine operators compartment
NAT MINE SERVICE CO4 citations55