TREA

Donald F. Ball

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  • State College, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for controlled spray etching
    • Patent number 5,290,384
    • Issue date Mar 1, 1994
    • Chemcut Corporation
    • Karl F. G. Ketelhohn
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Method and apparatus for controlled spray etching
    • Patent number 5,228,949
    • Issue date Jul 20, 1993
    • Chemcut Corporation
    • Karl F. G. Ketelhohn
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...