Patents by Inventor Robert W. von Lutzow

Robert W. von Lutzow 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).

  • Bubbler sprinkler
    Patent number: 4159805
    Abstract: A bubbler type sprinkler head for providing controlled water flow by means of an easily adjustable head eliminating all metallic parts of the prior art structures that corrode or induce scaling of the water in the bubbler head.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: July 3, 1979
    Inventor: Robert W. von Lutzow