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Water based coating for roughened metal surfaces

  • US 5,104,742 A
  • Filed: 05/10/1989
  • Issued: 04/14/1992
  • Est. Priority Date: 05/10/1989
  • Status: Expired due to Fees
First Claim
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1. A manufacture comprising a ferrous metal workpiece having a surface prepared by oxynitriding nitrocarburizing plus oxidizing, metallurgical process to provide an expanded porous surface, and coated with a composition comprising in combination:

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