Robert Simpson

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Dundas, CA

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Patents Grantslast 30 patents

Information Patent Grant
Process for transforming pre-used asphaltic roofing shingles into p...
- Patent number 7,297,301
- Issue date Nov 20, 2007
- Maurice Deschamps
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL