Inventor
BALDRIDGE DAVID L
US3 patents
Patents
3 patentsUS4753484AJun 28, 1988
Method for remote control of a coal shearer
STOLAR INC82 citations94
US5188426AFeb 23, 1993
Method for controlling the thickness of a layer of material in a seam
STOLAR INC21 citations91
US5072172ADec 10, 1991
Method and apparatus for measuring the thickness of a layer of geologic material using a microstrip antenna
STOLAR INC40 citations91