Patents by Inventor Glenn R. Limb

Glenn R. Limb 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).

  • Filter chest for use with multiple filter units, for laboratories, and with the filter units
    Patent number: 4832842
    Abstract: A chest in which a vacuum is formed. A removable tray in the form of a flat thin panel rests in the chest adjacent the top, and is provided with a pattern of holes in which test tubes are placed and supported. A cover has a similar pattern of holes in which filter units, containing samples to be tested, are placed in register with the test tubes respectively. The holes in the cover are provided with removable bosses for receiving and supporting the filter units, and sealing them. Stoppers are provided for sealing the holes in the cover when the filter units are not in place in the holes.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: May 23, 1989
    Inventor: Glenn R. Limb