Douglas Frederick Sweet

Person

  • Birmingham, AL, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Mixed flow liquid ring pumps

    • Patent number 5,961,295
    • Issue date Oct 5, 1999
    • The Nash Engineering Company
    • Harold K. Haavik
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...