Douglas E. Cooke

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New Brunswick, CA

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Patents Grantslast 30 patents

Information Patent Grant
Three-way ring puzzle
- Patent number 7,036,819
- Issue date May 2, 2006
- Douglas E. Cooke
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Three-way ring puzzle
- Publication number 20050093234
- Publication date May 5, 2005
- Douglas E. Cooke
- A63 - SPORTS GAMES AMUSEMENTS