Patents by Inventor Robert E. Colby

Robert E. Colby 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: 4490879
    Abstract: A scraping tool comprising scraping means adjustably and removably securable to an elongated, rigid handle, the scraping means comprising two rigid metal blades each having a scraping edge, and securing means for attaching one or both blades to the handle as desired, the securing means further enabling the position and distance of each blade edge relative to the handle to be selectively adjusted when both blades are attached to the handle. Preferably, the handle is provided with interconnection means for connecting additional lengths of handle so that the total length of the handle may be increased as desired.
    Type: Grant
    Filed: June 15, 1983
    Date of Patent: January 1, 1985
    Inventor: Robert E. Colby