L. James Marggraff

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Lafayette, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Write on interactive apparatus and method
- Patent number 7,120,385
- Issue date Oct 10, 2006
- LeapFrog Enterprises, Inc.
- L. James Marggraff
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Interactive apparatus using print media
- Patent number 6,985,139
- Issue date Jan 10, 2006
- LeapFrog Enterprises, Inc.
- L. James Marggraff
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Tutorial apparatus
- Publication number 20050114776
- Publication date May 26, 2005
- LeapFrog Enterprises, Inc.
- Michael C. Wood
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Interactive apparatus using print media
- Publication number 20040140966
- Publication date Jul 22, 2004
- LeapFrog Enterprises, Inc.
- L. James Marggraff
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Compact book and apparatus using print media
- Publication number 20040104890
- Publication date Jun 3, 2004
- LeapFrog Enterprises, Inc.
- John Caldwell
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Write on interactive apparatus and method
- Publication number 20030162162
- Publication date Aug 28, 2003
- LeapFrog Enterprises, Inc.
- L. James Marggraff
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS