Douglas P. Schofield

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Rochester, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Credit card pocket mirror and miniature billboard
- Patent number 6,561,657
- Issue date May 13, 2003
- Douglas P. Schofield
- G02 - OPTICS
Information Patent Grant
Credit card pocket mirror and miniature billboard
- Patent number 6,142,640
- Issue date Nov 7, 2000
- Douglas P. Schofield
- G02 - OPTICS