Patents by Inventor Kurt Koppers

Kurt Koppers 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).

  • Cutting tool
    Patent number: 3981057
    Abstract: A cutting tool comprises a tool bit having the configuration of a hollow pyramid which includes an open base and three side walls, each having an outer face. The adjoining outer faces define three cutting edges coverging in the apex of the pyramid. The cutting tool further has a base block with a recess for receiving the tool bit and a clamping device for tightening the tool bit, positioned in said recess, to the base block.
    Type: Grant
    Filed: November 14, 1975
    Date of Patent: September 21, 1976
    Assignee: Fried. Krupp Gesellschaft mit beschrankter Haftung
    Inventor: Kurt Koppers