BALL DELIVERY AND CONTROL MEANS
United States Patent 3441279
US Patent References:
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- - 2040310

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- - 2610058

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- - 2610059

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- - 2658755

Ball retarding device
- - 2879064


Inventors:
Lally, Joseph E.
Heppner, Earl F.
Berninger, Harold O.
Publication Date:
04/29/1969
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Assignee:
BALLY MFG CORP
Primary Class:
273/121A
Other Classes:
273/129R, 273/122R
International Classes:
A63D13/00; A63B71/00; A63F7/10; A63D3/02
US Patent References:
3206199Bowling ball accelerating return system




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