Patents by Inventor John C. Hietala

John C. Hietala 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).

  • Washer for folding chairs
    Patent number: 5794301
    Abstract: A folding chair washer comprised of a frame with several vertically arranged sets of linear, horizontal brushes, the brushes in each set being placed opposite each other. The frame, with attached sets of brushes is inserted into a container holding either a cleaning fluid or a rinsing fluid.
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: August 18, 1998
    Inventor: John C. Hietala