Amusement devices: games – Board games – pieces – or boards therefor – Electrical
Patent
1990-05-02
1991-04-09
Marlo, George J.
Amusement devices: games
Board games, pieces, or boards therefor
Electrical
40327, A63B 3714
Patent
active
050058380
ABSTRACT:
The present invention is directed to a golf ball wherein a projection is circularly formed on the bottom of a dimple so as to increase the drag coefficient of the golf ball, whereby the golf ball can be prevented from flying a long distance.
Supposing that the largest diameter of said projection is D1, the diameter of said dimple is D2, and L=D1/D2,
REFERENCES:
patent: 922773 (1909-05-01), Kempshall
patent: 1716435 (1929-06-01), Fotheringham
Marlo George J.
Sumitomo Rubber Industries Ltd.
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