TREA

Charles J. Schafer

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  • Adair, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Nestable connector
    • Patent number 8,746,746
    • Issue date Jun 10, 2014
    • Christopher E. Schafer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Head control stand
    • Patent number 4,621,945
    • Issue date Nov 11, 1986
    • Christopher E. Schafer
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING