TREA

Gerald P. Wivinis

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  • North Chicago, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sheet metal wrapping tool
    • Patent number 4,472,867
    • Issue date Sep 25, 1984
    • Gerald P. Wivinis
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Pulling tool
    • Patent number 4,348,884
    • Issue date Sep 14, 1982
    • Gerald P. Wivinis
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Pulling tool and method
    • Patent number 4,040,287
    • Issue date Aug 9, 1977
    • Gerald P. Wivinis
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...