Benjamin J. McPhee

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Hamilton, AU

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Patents Grantslast 30 patents

Information Patent Grant
Yo-yo having visual indication of response setting
- Patent number 6,887,122
- Issue date May 3, 2005
- Hans W. Van Dan Elzen
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Yo-yo having a user-adjustable clutch mechanism
- Publication number 20070026762
- Publication date Feb 1, 2007
- Benjamin J. McPhee
- A63 - SPORTS GAMES AMUSEMENTS