Inventor
CARL JR FREDERICK G
US4 patents
Patents
4 patentsUS5553189ASep 3, 1996
Radiant plate heater for treatment of contaminated surfaces
SHELL OIL CO336 citations98
US5229583AJul 20, 1993
Surface heating blanket for soil remediation
SHELL OIL CO342 citations98
US5189283AFeb 23, 1993
Current to power crossover heater control
SHELL OIL CO345 citations97
US5164660ANov 17, 1992
True, power, RMS current, and RMS voltage measuring devices
SHELL OIL CO7 citations71