TREA

Willem Rozema

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  • The Hague, NL
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Patents Grantslast 30 patents

  • Information Patent Grant

    Trickle valve
    • Patent number 6,569,317
    • Issue date May 27, 2003
    • Shell Oil Company
    • Hendricus Arien Dirkse
    • B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...