A play ball as set with a sound generators 15.

• 1. 装有彩色插入物的赛球 [P] . 中国专利： CN103298526B . 2015.11.25
• 2. 装有彩色插入物的赛球 [P] . 中国专利： CN103298526A . 2013-09-11
• 3. A play ball as set with a sound generators 15. [P] . 德国专利： DE508763C . 1930-10-01

  机译： 装有发声器的比赛球15。

• 4. Play aid for organs and control electronic keyboard instruments and sound generators 15. [P] . 德国专利： DE29806002U1 . 1998-07-23

  机译： 器官的助听器以及控制电子键盘乐器和发声器的方法15。

• 5. For play, are the towing vehicle and / or sound generators 15. [P] . 德国专利： DE819521C . 1951-10-31

  机译： 为了玩耍，有牵引车和/或发声器15。

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