Patents by Inventor Robert E. Grind

Robert E. Grind 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).

  • Sectional boat
    Patent number: 3996634
    Abstract: A multiple section boat, each section being separately buoyant, and preferably the sections being sized to nest in storage; adjacent sections being attached at the bottom for tension loads by a plurality of upstanding hook-like tabs on the forward section fitting into slots on the bottom of the next rearward section; screw clamps attaching the tops of adjacent sections; and spacer strips, for compression loads, positioned between adjacent sections.
    Type: Grant
    Filed: November 24, 1975
    Date of Patent: December 14, 1976
    Inventor: Robert E. Grind
  • Sectional boat
    Patent number: D244015
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: April 12, 1977
    Inventor: Robert E. Grind
  • Modular picture frame
    Patent number: D273355
    Type: Grant
    Filed: February 16, 1979
    Date of Patent: April 10, 1984
    Inventor: Robert E. Grind