TREA

Douglas Mel Clarkson

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  • Brantford, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Metal wall construction for buildings
    • Patent number 4,075,810
    • Issue date Feb 28, 1978
    • Dominion Foundries and Steel, Limited
    • Andrew Steven Zakrzewski
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Building construction
    • Patent number 4,058,941
    • Issue date Nov 22, 1977
    • Dominion Foundries and Steel, Limited
    • Andrew Steven Zakrzewski
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING