TREA

Herbert Carl Barnum

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  • East Jordan, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Lift-assisted manhole cover
    • Patent number 7,341,398
    • Issue date Mar 11, 2008
    • East Jordan Iron Works, Inc.
    • Jeremy I. Johnson
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

  • Information Patent Application

    LIFT-ASSISTED MANHOLE COVER
    • Publication number 20080138153
    • Publication date Jun 12, 2008
    • EAST JORDAN IRON WORKS, INC.
    • Jeremy I. Johnson
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    LIFT-ASSISTED MANHOLE COVER
    • Publication number 20070274779
    • Publication date Nov 29, 2007
    • EAST JORDAN IRON WORKS, INC.
    • Jeremy I. Johnson
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Cast hatch with lift assist
    • Publication number 20060236610
    • Publication date Oct 26, 2006
    • East Jordan Iron Works, Inc.
    • Herbert Carl Barnum
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES