Inventor
SWANNELL ROBERT W
US3 patents
Patents
3 patentsUS7434777B2Oct 14, 2008
Interlocking roll support and spacing structure
GREAT NORTHERN CORP24 citations89
US6142440ANov 7, 2000
Large roll support having reinforcement bridges
GREAT NORTHERN CORP51 citations89
US7628368B2Dec 8, 2009
Interlocking roll support and spacing structure
GREAT NORTHERN CORP3 citations59