TREA

Hans Alexandersson

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  • Fristad, SE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sealing device
    • Patent number 8,079,420
    • Issue date Dec 20, 2011
    • Pemtec AB
    • Hans Alexandersson
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    SYSTEM FOR EXCHANGING ENERGY WITH A GROUND
    • Publication number 20110265989
    • Publication date Nov 3, 2011
    • PEMTEC AB
    • Hans Alexandersson
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    Sealing device
    • Publication number 20100252230
    • Publication date Oct 7, 2010
    • Hans Alexandersson
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Sealing device
    • Publication number 20090044958
    • Publication date Feb 19, 2009
    • Hans Alexandersson
    • E21 - EARTH DRILLING MINING