Andrew B. Hartzell

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Emeryville, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Study aid apparatus and method of using study aid apparatus
- Patent number 6,793,129
- Issue date Sep 21, 2004
- LeapFrog Enterprises, Inc.
- Michael C. Wood
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
Gaming apparatus including platform
- Publication number 20050208458
- Publication date Sep 22, 2005
- LeapFrog Enterprises, Inc.
- Rachael S. Smith
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Interactive game apparatus
- Publication number 20050170873
- Publication date Aug 4, 2005
- LeapFrog Enterprises, Inc.
- Matthew Fishbach
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Application
Study aid apparatus and method of using study aid apparatus
- Publication number 20040206809
- Publication date Oct 21, 2004
- LeapFrog Enterprises, Inc.
- Michael C. Wood
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Study aid apparatus and method of using study aid apparatus
- Publication number 20030077558
- Publication date Apr 24, 2003
- LeapFrog Enterprises, Inc.
- Michael C. Wood
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS