TREA

Peter, Cornelis Graaff

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  • Dordrecht, NL
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tooth retaining and locking system
    • Patent number 10,526,769
    • Issue date Jan 7, 2020
    • IHC Holland IE B.V.
    • Eugenius Petrus Elisabeth Marie Cleophas
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

  • Information Patent Application

    TOOTH RETAINING AND LOCKING SYSTEM
    • Publication number 20180305904
    • Publication date Oct 25, 2018
    • IHC Holland IE B.V.
    • Eugenius Petrus Elisabeth Marie Cleophas
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    VESSEL FOR FORMING A TRENCH IN A WATER BOTTOM
    • Publication number 20150167273
    • Publication date Jun 18, 2015
    • IHC Holland IE B.V.
    • Peter, Cornelis Graaff
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING