David PERKINSON

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San Anselmo, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Interactive educational system with light emitting controller
- Patent number 9,977,565
- Issue date May 22, 2018
- LeapFrog Enterprises, Inc.
- Alex Potts
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
INTERACTIVE EDUCATIONAL SYSTEM
- Publication number 20160231896
- Publication date Aug 11, 2016
- LeapFrog Enterprises, Inc.
- Alex Potts
- G06 - COMPUTING CALCULATING COUNTING