Patents Assigned to Firma Heinrich Lippert GmbH
  • Grinding tool metal machining
    Patent number: 4338748
    Abstract: A grinding tool for metal machining which is provided with matrix-bonded abrasive grains, the hardness of the matrix varying over the grinding area, along which the workpiece moves in a single operation during its passage.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: July 13, 1982
    Assignee: Firma Heinrich Lippert GmbH
    Inventor: Karl Elbel