Patents by Inventor Ron T. Williamson

Ron T. Williamson 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).

  • Patent number: 4182385
    Abstract: A plastic evacuation tube for use with a standard dental and/or surgical vacuum system is disclosed. The tube is formed with an enlarged non-compressible bulb-shaped portion (bulb) intermediate its length. The operational end section of the tube is tapered from the bulb to a smaller diameter flexible tip end and may be provided with spaced apart markings to designate decreasing inner diameters from the bulb to the tip end.
    Type: Grant
    Filed: August 19, 1977
    Date of Patent: January 8, 1980
    Inventor: Ron T. Williamson