Mark Johnson-Williams

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Half-Moon Bay, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Stereoscopic/monoscopic video display system
- Patent number 5,523,886
- Issue date Jun 4, 1996
- Sega of America, Inc.
- Mark B. Johnson-Williams
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Electrical device with alternative battery power supplies
- Patent number 5,331,212
- Issue date Jul 19, 1994
- Western Publishing Company Inc.
- Mark Johnson-Williams
- G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

Information Patent Application
Method and system for interactive toys
- Publication number 20010051488
- Publication date Dec 13, 2001
- Jeremy Tachau
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Application
Method and system for interactive toys
- Publication number 20010049249
- Publication date Dec 6, 2001
- Jeremy Tachau
- A63 - SPORTS GAMES AMUSEMENTS