Inventor
BERGER KARL-HEINZ
DE7 patents
Patents
7 patentsUS5090775AFeb 25, 1992
Method of monitoring and controlling mining operations
BOCHUMER EISEN HEINTZMANN11 citations71
US5144275ASep 1, 1992
Positioning cylinder, especially for subterranean mining
BOCHUMER EISEN HEINTZMANN9 citations70
US4798417AJan 17, 1989
Method of separating the upper coal in seams
BOCHUMER EISEN HEINTZMANN14 citations70
US4900091AFeb 13, 1990
Electrohydraulic coal-mining system
BOCHUMER EISEN HEINTZMANN9 citations69
US5110187AMay 5, 1992
Apparatus for the mining of mineral matter, especially coal
BOCHUMER EISEN HEINTZMANN13 citations67
US4905520AMar 6, 1990
Pressure sensor
BOCHUMER EISEN HEINTZMANN12 citations65
US4693640ASep 15, 1987
Method of controlling hydraulically actuatable arrangement in underground mining
BOCHUMER EISEN HEINTZMANN4 citations60