Inventor

GRAEFE RICHARD J

US3 patents

Patents

3 patents

US4345288AAug 17, 1982

Solid state over-current protective apparatus for a power circuit

SQUARE D CO50 citations89

US4634951AJan 6, 1987

Reduced voltage starter with voltage ramp control

SQUARE D CO24 citations80

US4714977ADec 22, 1987

Electronic delay timer

SQUARE D CO4 citations58