Armstrong, Nikaido, Marmelstein & Kubovcik
Solid three-piece golf ball
 A solid three piece golf ball made by covering a core, which consists of inner and outer layers, with a shell, the inner layer having a diameter of 24-29 mm and a hardness (Shore hardness D) of 15-30, the outer layer having a diameter of 36-41 mm and a hardness (Shore hardness D) of 55-65, the golf ball having a percentage of the area of the portion of the surface thereof which contacts a club face when the ball is struck by the club within a range of 27-35%. 
Kamatari Co., Ltd.
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Toshihiko Shinichi Shunji
Kamada Watanabe Izumi