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Dave Roberts

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  • Shoreview, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Portable manhole cover remover
    • Patent number 6,945,742
    • Issue date Sep 20, 2005
    • Dave Roberts
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Patents Applicationslast 30 patents

  • Information Patent Application

    Portable manhole cover remover
    • Publication number 20040042886
    • Publication date Mar 4, 2004
    • Dave Roberts
    • B66 - HOISTING LIFTING HAULING
  • Information Patent Application

    Portable manhole cover remover
    • Publication number 20030235487
    • Publication date Dec 25, 2003
    • Dave Roberts
    • B66 - HOISTING LIFTING HAULING