Inventor

HANSON ROLF M

US3 patents

Patents

3 patents

US5674125AOct 7, 1997

Fresh air flow modulation device

AMERICAN STANDARD INC39 citations93

US5883486AMar 16, 1999

Apparatus and method for soft-starting a three-phase motor

AMERICAN STANDARD INC21 citations90

US5741180AApr 21, 1998

Fresh air flor modulation device

AMERICAN STANDARD INC34 citations90