William F. Swietzer

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Danielsville, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Embossed sheet type covering material
- Patent number 4,273,820
- Issue date Jun 16, 1981
- GAF Corporation
- William F. Swietzer
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...