Inventor

WILLYARD DENNIS M

US3 patents

Patents

3 patents

US6418611B1Jul 16, 2002

Progressive die machine

GR SPRING & STAMPING INC17 citations85

US6389671B2May 21, 2002

Progressive die machine and method

GR SPRING & STAMPING INC3 citations55

US6006563ADec 28, 1999

Progressive die machine and method

GR SPRING & STAMPING INC4 citations54