Assignee
SPIES KLAUS
DE4 patents
Top patents by PatentIndex Score
US4625815ADec 2, 1986
Drilling equipment, especially for use in underground mining
SPIES KLAUS34 citations92
US4185940AJan 29, 1980
Method and system for supporting a roof
SPIES KLAUS45 citations92
US4378132AMar 29, 1983
Mining method and apparatus
SPIES KLAUS32 citations89
US5193883AMar 16, 1993
Process for controlling longwall shearing and heading machines along a cutting horizon between coal and rock
SPIES KLAUS20 citations81