TREA

Otto Tschumi

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  • Frauenfeld, CH
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Patents Grantslast 30 patents

  • Information Patent Grant

    Device for coating tunnel walls
    • Patent number 9,366,136
    • Issue date Jun 14, 2016
    • Atlas Copco Rock Drills AB
    • Lars Wingeier
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Spray nozzle
    • Patent number 6,065,685
    • Issue date May 23, 2000
    • MBT Holding AG
    • Otto Tschumi
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Shotcrete gun
    • Patent number 5,094,403
    • Issue date Mar 10, 1992
    • Sandoz Ltd.
    • Otto Tschumi
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Shotcrete gun
    • Patent number 5,076,501
    • Issue date Dec 31, 1991
    • Sandoz Ltd.
    • Otto Tschumi
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents