Patents by Inventor Erich Butz

Erich Butz 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).

  • Treating surfaces with liquids
    Patent number: 4158576
    Abstract: Process and apparatus for the liquid treatment of a surface by projecting sponge-like elements. The said elements are metered seriation from a hopper in a controlled positive manner by a paddle-wheel means.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: June 19, 1979
    Assignee: Koelsch-Foelger-Werke AK.
    Inventor: Erich Butz