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William R. Skowronek
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Jeffersonville, PA, US
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Patent Grant
Nickel-free metal phosphating composition and method for use
Patent number
4,717,431
Issue date
Jan 5, 1988
Amchem Products, Inc.
Mark B. Knaster
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...