Marek Czekanski

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Toronto, CA

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Patents Grantslast 30 patents

Information Patent Grant
Math game and method
- Patent number 7,604,237
- Issue date Oct 20, 2009
- Marek Czekanski
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Math game and method
- Publication number 20080169608
- Publication date Jul 17, 2008
- Marek Czekanski
- A63 - SPORTS GAMES AMUSEMENTS