David W. Spencer

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Saugus, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Video gateway having movable screens
- Patent number 5,708,527
- Issue date Jan 13, 1998
- Sony Corporation
- William G. Adamson
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Dynamic ride vehicle
- Patent number 5,623,878
- Issue date Apr 29, 1997
- The Walt Disney Company
- Anthony W. Baxter
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Programming device and method for controlling ride vehicles in an a...
- Patent number 5,583,844
- Issue date Dec 10, 1996
- The Walt Disney Company
- William L. Wolf
- G05 - CONTROLLING REGULATING
Information Patent Grant
Amusement park attraction
- Patent number 5,403,238
- Issue date Apr 4, 1995
- The Walt Disney Company
- Anthony W. Baxter
- A63 - SPORTS GAMES AMUSEMENTS