Patents by Inventor Rudolf Zinsser

Rudolf Zinsser 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).

  • Fan
    Patent number: 4251189
    Abstract: A fan blade has a protective beading on at least some of the edges thereof, the protective beading protecting against injuries while the fan is operating.
    Type: Grant
    Filed: September 26, 1978
    Date of Patent: February 17, 1981
    Assignee: Heidolph & Zinsser GmbH
    Inventors: Rudolf Zinsser, Karl Prestl