Inventor
GRESCHL GERALD L
US4 patents
Patents
4 patentsUS5689963ANov 25, 1997
Diagnostics for a heating and cooling system
COPELAND CORP172 citations98
US5628201AMay 13, 1997
Heating and cooling system with variable capacity compressor
COPELAND CORP216 citations98
US5623834AApr 29, 1997
Diagnostics for a heating and cooling system
COPELAND CORP164 citations98
US5533352AJul 9, 1996
Forced air heat exchanging system with variable fan speed control
COPELAND CORP48 citations88