TREA

Stephen G. Corthell

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  • Tiffin, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Progressive former
    • Patent number 5,363,686
    • Issue date Nov 15, 1994
    • The National Machinery Company
    • William H. Hite
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Progressive former and method of producing same
    • Patent number 5,263,356
    • Issue date Nov 23, 1993
    • The National Machinery Company
    • William H. Hite
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Progressive former and method of producing same
    • Patent number 5,138,866
    • Issue date Aug 18, 1992
    • The National Machinery Company
    • William H. Hite
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Progressive former and method of producing same
    • Patent number 4,910,993
    • Issue date Mar 27, 1990
    • The National Machinery Company
    • William H. Hite
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...