|
US6328681B1
|
|
Elastomeric roll cover with ultra high molecular weight polyethylene filler
|
|
US3296706A
|
|
Device for determining finger-hole positions in a bowling ball
|
|
US3349693A
|
|
Roll cover construction
|
|
US3364607A
|
|
Bowling ball
|
|
US3350252A
|
|
Structure and manufacture of bowling balls
|
|
US3238628A
|
|
Bowling ball grip measuring device
|
|
US3156050A
|
|
Device for determining finger-hole positions in bowling balls
|
|
US3206201A
|
|
Bowling ball structures and their manufacture
|
|
US2485471A
|
|
Bowling ball with flat sided finger holes
|
|
US2339954A
|
|
Bowling ball
|
|
US2283469A
|
|
Boring mechanism
|
|
US2188868A
|
|
Bowler's grip ball
|
|
US2280208A
|
|
Press roll
|
|
US2186890A
|
|
Sectional roll
|
|
GB468482A
|
|
Improvements in or relating to rolls
|
|
US2066755A
|
|
Roll
|
|
US2066752A
|
|
Rubber covered roll and method of making the same
|
|
US1927654A
|
|
Bowling ball
|
|
CA379682A
|
|
Rubber-covered roll
|
|
CA371682A
|
|
Roll
|
