Games using tangible projectile – Bowling – Ball
Patent
1991-08-01
1995-08-01
Marlo, George J.
Games using tangible projectile
Bowling
Ball
A63B 3706
Patent
active
054375797
ABSTRACT:
A bowling ball having thumb and finger holes for gripping said ball, said ball having a geometric center and when thrown consistently having a ball track plane and a spin axis, said spin axis being perpendicular to said ball track plane, said ball comprising:
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