Robert R. Gruetzmacher

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Chadds Ford, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing an overcoated photopolymer printing plate
- Patent number 4,460,675
- Issue date Jul 17, 1984
- E. I. Du Pont de Nemours and Company
- Robert R. Gruetzmacher
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for preparing an overcoated photopolymer printing plate
- Patent number 4,427,759
- Issue date Jan 24, 1984
- E. I. Du Pont de Nemours and Company
- Robert R. Gruetzmacher
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for bromine surface treatment of photosensitive elastomeric...
- Patent number 4,400,459
- Issue date Aug 23, 1983
- E. I. Du Pont de Nemours and Company
- Robert R. Gruetzmacher
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY