Inventor
VAN DE CAMP JOHANNES W
US3 patents
Patents
3 patentsUS6851643B2Feb 8, 2005
Spirally wound tube with enhanced inner diameter stiffness, and method of making same
SONOCO DEV INC29 citations86
US7188800B2Mar 13, 2007
Collapsible winding core and method of making same
SONOCO DEV INC8 citations63
US6050148AApr 18, 2000
Dynamic strength tester for paper cores
SONOCO DEV INC7 citations62