Patents by Inventor Robert John Armstrong

Robert John Armstrong 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: 5988383
    Abstract: A device for containing various work implements designed for use by workers who regularly use ladders. The device holds the implements in such fashion as to be ergonomically accessible while maintaining a reduced center of gravity and hence increased stability of the ladder/device combination as a whole. Use of this device increases safety and is cost-effective enough in its construction to be readily employed by workers in various arts.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: November 23, 1999
    Inventor: Robert John Armstrong