TREA

Hall; Margaret T.

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  • Atlanta, GA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Manhole extender elements
    • Patent number 4,187,647
    • Issue date Feb 12, 1980
    • Hall; Margaret T.
    • John R. Hall
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Manhole extension assembly
    • Patent number 4,188,151
    • Issue date Feb 12, 1980
    • Hall; Margaret T.
    • John R. Hall
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

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