Victor E. Pietryga

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Berwyn, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Masking compositions and method for applying the same
- Patent number 4,946,711
- Issue date Aug 7, 1990
- DeSoto, Inc.
- Fred D. Hawker
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Masking compositions for chemical milling and method for applying t...
- Patent number 4,806,390
- Issue date Feb 21, 1989
- DeSoto, Inc.
- Fred D. Hawker
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...