HAMAMATSU KENNA CO., LTD.
|HAMAMATSU KENNA CO., LTD. Patent applications|
|Patent application number||Title||Published|
|20100087264||BOWLING PIN AND MANUFACTURING METHOD THEREOF - To provide a bowling pin which exhibits a pin action of the bowling pin which is generated due to strong hitting of the ball with the bowling pin close to a pin action of a conventional bowling pin. An upper core||04-08-2010|