Inventor

DOUGHTY ALAN C

US3 patents

Patents

3 patents

US7000905B1Feb 21, 2006

Retaining keeper assembly for a hoisting device

CROSBY GROUP23 citations89

US7293763B2Nov 13, 2007

Retaining keeper assembly for a hoisting device

CROSBY GROUP9 citations70

US7255330B2Aug 14, 2007

Field adjustable bridge crane block

CROSBY GROUP5 citations59