TREA

David Henry Ditlefsen

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  • Centuria, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sieve bed for a sifting machine
    • Patent number 7,273,151
    • Issue date Sep 25, 2007
    • Durex Products, Inc.
    • Kirk Sawall
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Sieve bed for a sifting machine
    • Patent number 6,634,505
    • Issue date Oct 21, 2003
    • Durex Products, Inc.
    • Kirk Sawall
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Screen panel
    • Patent number D445437
    • Issue date Jul 24, 2001
    • Kirk Sawall
    • D15 - Machines not elsewhere specified

Patents Applicationslast 30 patents

  • Information Patent Application

    Sieve bed for a sifting machine
    • Publication number 20040074820
    • Publication date Apr 22, 2004
    • Kirk Sawall
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING