Patents by Inventor Dietmar Spiwokz

Dietmar Spiwokz 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).

  • Arrangement for producing grooves
    Patent number: 4288187
    Abstract: An arrangement for producing grooves in walls, ceilings and the like with the use of a hand-held processing machine, has a rotatable material-removing tool driven in rotation by the machine, and a housing surrounding the tool. The housing has a guiding piece through which the tool extends. The guiding piece has a guiding surface which is adapted to lie on the surface of the wall, ceiling and the like, and is inclined at an acute angle relative to the axis of the tool. The guiding piece is detachably mounted on the processing machine.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: September 8, 1981
    Assignee: Robert Bosch GmbH
    Inventors: Karl Wanner, Wilbert Reibetanz, Hans-Peter Dohse, Otto Baumann, Dietmar Spiwokz, Karl Seitz, Ernst Angermair, Herbert Wiesner