Patents by Inventor Roy L. Watson

Roy L. Watson 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).

  • Vacuum and control system sealing caps and plugs
    Patent number: 5044404
    Abstract: A device consisting of a plug and cap which provides a means of sealing, accounting for, and correct replacement of lines and fittings on the internal combustion engines and their associated components and controls removed, or separated during maintenance and testing.
    Type: Grant
    Filed: August 27, 1987
    Date of Patent: September 3, 1991
    Inventor: Roy L. Watson