Patents by Inventor Ronald E. Underwood

Ronald E. Underwood 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).

  • Drawing instrument and locking apparatus therefor
    Patent number: 4449304
    Abstract: A drawing instrument and locking apparatus therefor in which the locking apparatus can be made of polyethylene, polypropylene or the like and is not subject to fragmentation or permanent damage during normal use. A displaceable member of the locking apparatus is displaceable into a groove of a drawing board to lock the drawing instrument in position thereon. An outer ring member freely rotatable through 360 degrees around the displaceable member when the displaceable member is in its raised condition engages the displaceable member when the displaceable member is in its depressed condition upon rotation of the ring member to unlock the apparatus.
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: May 22, 1984
    Assignee: Binney & Smith Inc.
    Inventor: Ronald E. Underwood
  • Pacifier
    Patent number: D404137
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: January 12, 1999
    Assignee: Playtex Products, Inc.
    Inventors: Ronald E. Underwood, William E. Fitzpatrick, Aiden John Petrie