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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 |