William Lewis Duke

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Santa Clarita, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Tactile Sudoku Game Display for the Blind
- Patent number 8,419,432
- Issue date Apr 16, 2013
- William Lewis Duke
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Tactile sudoku game display for the blind
- Publication number 20100311019
- Publication date Dec 9, 2010
- William Lewis Duke
- A63 - SPORTS GAMES AMUSEMENTS