Calvin Mims

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Oak Park, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Ball toss sport training apparatus
- Patent number 5,800,288
- Issue date Sep 1, 1998
- Calvin Mims
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Baseball batting training apparatus
- Patent number 5,597,160
- Issue date Jan 28, 1997
- Calvin Mims
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
A quiz game with response indication for correct and incorrect answers
- Patent number 4,227,318
- Issue date Oct 14, 1980
- Calvin Mims
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS