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Gregory E. Hyman
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Boca Raton, FL, US
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last 30 patents
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Patent Grant
Question and answer amusement device
Patent number
6,155,838
Issue date
Dec 5, 2000
Mattel, Inc.
Gregory E. Hyman
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Patent Grant
Voice recording and playback module
Patent number
5,765,129
Issue date
Jun 9, 1998
Gregory E. Hyman
G11 - INFORMATION STORAGE