TREA

Karl L. Polen

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  • Alliance, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Mould handling, cleaning and preparation systems
    • Patent number 4,446,813
    • Issue date May 8, 1984
    • The Alliance Machine Company
    • Edward J. Kinkopf
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Crane safety reeving
    • Patent number 4,214,664
    • Issue date Jul 29, 1980
    • The Alliance Machine Company
    • Karl L. Polen
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    Gantry cranes
    • Patent number 4,094,493
    • Issue date Jun 13, 1978
    • The Alliance Machine Company
    • Karl L. Polen
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Grant

    Gantry crane with plural hoist means
    • Patent number 4,027,800
    • Issue date Jun 7, 1977
    • The Alliance Machine Company
    • Karl L. Polen
    • B66 - HOISTING LIFTING HAULING