Patents by Inventor Robert Roger Cantwell

Robert Roger Cantwell 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).

  • Tent
    Patent number: 3943952
    Abstract: A tent comprising a bay extending from front to rear and wings extending laterally outwardly from opposite sides thereof, each wing having a front wall and a back wall, each wall of each wing comprising an outside screen and an inside closure flap adapted to be closed on the inside of the screen or opened for ventilation purposes, the closure flaps also being adapted to form partitions dividing the bay into individual chambers.
    Type: Grant
    Filed: February 19, 1975
    Date of Patent: March 16, 1976
    Assignee: Kellwood Company
    Inventors: Tom Eugene Marquart, Robert Roger Cantwell
  • Inflatable boat
    Patent number: 3935607
    Abstract: An inflatable boat comprising inner inflatable tubes in an outer tube, the inner tubes and the outer tube being fabricated from flat sheet stock by a method involving stitching a bottom seam of the outer tube with the outer tube in place on the inflated inner tubes.
    Type: Grant
    Filed: August 26, 1974
    Date of Patent: February 3, 1976
    Assignee: Kellwood Company
    Inventors: Robert Roger Cantwell, Harold J. Pohl