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Taichung, TW

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Patents Grantslast 30 patents

Information Patent Grant
Ball retrieval cart
- Patent number 5,507,541
- Issue date Apr 16, 1996
- Sam H.-S. Chen
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Tennis ball retriever and storage cart
- Patent number 5,301,991
- Issue date Apr 12, 1994
- Sam H. Chen
- A63 - SPORTS GAMES AMUSEMENTS