David R. Collins

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Lichfield, GB

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Patents Grantslast 30 patents

Information Patent Grant
Ground-gripping elements for shoe soles
- Patent number 6,041,526
- Issue date Mar 28, 2000
- Trisport Limited
- David Roy Collins
- A43 - FOOTWEAR
Information Patent Grant
Footwear having an outsole stiffener
- Patent number 5,452,526
- Issue date Sep 26, 1995
- Trisport Limited
- David R. Collins
- A43 - FOOTWEAR