Margaret E. Baumgartner

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Elburn, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Math manipulative educational learning game
- Patent number 7,059,861
- Issue date Jun 13, 2006
- Margaret E. Baumgartner
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Math manipulative educational learning game
- Patent number 6,609,712
- Issue date Aug 26, 2003
- Margaret E. Baumgartner
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS