TREA

Manfred Keller

Follow

Person

  • Krefeld, DE
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Method of producing a vacuum
    • Patent number 4,973,227
    • Issue date Nov 27, 1990
    • HWT Gesellschaft fur Hydrid-und Wasserstofftechnik m.b.H.
    • Otto Bernauer
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...