Richard D. Paynton

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Doylestown, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing a filter
- Patent number 4,643,785
- Issue date Feb 17, 1987
- Richard D. Paynton
- B32 - LAYERED PRODUCTS
Information Patent Grant
Filter and method of manufacturing
- Patent number 4,514,585
- Issue date Apr 30, 1985
- Richard D. Paynton
- B32 - LAYERED PRODUCTS