David A. Powell

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Minneapolis, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Flexible skate
- Patent number 6,299,182
- Issue date Oct 9, 2001
- David A. Powell
- A43 - FOOTWEAR
Information Patent Grant
Flexible skate
- Patent number 5,957,470
- Issue date Sep 28, 1999
- David A. Powell
- A43 - FOOTWEAR