TREA

James A. Ehret

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  • Marion, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Dragline modular swing drive unit
    • Patent number 5,078,285
    • Issue date Jan 7, 1992
    • Dresser Industries, Inc.
    • Allan E. Geyer
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Dragline rotating frame structure
    • Patent number 5,058,753
    • Issue date Oct 22, 1991
    • Dresser Industries, Inc.
    • Dev R. Malik
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Load compensating roller bearing construction
    • Patent number 4,723,852
    • Issue date Feb 9, 1988
    • Dresser Industries, Inc.
    • James A. Ehret
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING