TREA

Lennart Wallen & Co AB

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  • Stockholm, SW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Dewatering and homogenizing apparatus
    • Patent number 3,943,034
    • Issue date Mar 9, 1976
    • Lennart Wallen & Co AB
    • Lennart E. O. Wallen
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Screw thickener
    • Patent number 3,943,033
    • Issue date Mar 9, 1976
    • Lennart Wallen & Co AB
    • Lennart E. O. Wallen
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE