J. Spencer King

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Seattle, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Gaming challenges which use leaderboards that rank challenge partic...
- Patent number 8,845,437
- Issue date Sep 30, 2014
- Microsoft Corporation
- Shirlene Lim
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
GAMING CHALLENGES
- Publication number 20130288788
- Publication date Oct 31, 2013
- Microsoft Corporation
- Shirlene Lim
- A63 - SPORTS GAMES AMUSEMENTS