TREA

Heinrich Waas

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Patents Grantslast 30 patents

  • Information Patent Grant

    Icebreaker vessel
    • Patent number 3,985,091
    • Issue date Oct 12, 1976
    • Heinrich Waas
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Icebreaker vessel
    • Patent number 3,973,509
    • Issue date Aug 10, 1976
    • Heinrich Waas
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT