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James R. Berger

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  • Tiffin, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Quick-change transfer head
    • Patent number 4,586,364
    • Issue date May 6, 1986
    • The National Machinery Company
    • James R. Berger
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Convertible multiple blow two die cold header
    • Patent number 4,170,123
    • Issue date Oct 9, 1979
    • The National Machinery Company
    • James R. Berger
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...