TREA

Maschinen- und Bohrgerate-Fabrik Alfred Wirth & Co., K.G.

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  • Erkelenz, DT
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Method and a device for drilling with several tools in simultaneous...
    • Patent number 4,079,795
    • Issue date Mar 21, 1978
    • Maschinen-und Bohrgerate-Fabrik Alfred Wirth & Co., K.G.
    • Wilfried Sackmann
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Device for actuating screw-threaded bolts
    • Patent number 4,027,559
    • Issue date Jun 7, 1977
    • Maschinen- und Bohrgerate-Fabrik Alfred Wirth & Co., K.G.
    • Gunter Wallrafen
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Drilling apparatus
    • Patent number 3,961,673
    • Issue date Jun 8, 1976
    • Maschinen- und Bohrgerate-Fabrik Alfred Wirth & Co., K.G.
    • Jakob Wolters
    • E21 - EARTH DRILLING MINING