Patents by Inventor Wolfgang Annipajo

Wolfgang Annipajo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Cutters for use in mineral mining
    Patent number: 4637658
    Abstract: A floor cutter bit for a coal plough has a body carrying a pair of hard metal plates which define a coal face cutting edge and a floor cutting edge. A hard metal pin locates between the plates and receives end zones of the plates within recesses.
    Type: Grant
    Filed: August 2, 1985
    Date of Patent: January 20, 1987
    Inventors: Wolfgang Annipajo, Oswald Breuer, Christoph Rassmann