Patents by Inventor Theodore C. DeGroot

Theodore C. DeGroot 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: 4162731
    Abstract: A wide variety of lightweight, simple to assemble furniture items are formed from rigid load bearing (normally vertical) members, rigid cross rods (normally horizontal) fastened to the rigid load bearing members and flexible sheet material. The sheet material interconnects at least two rods to form a shelf, ledge, seat or other holder or support. The flexible members have spring-locking engagement with the rod members and a frictional engagement with the load bearing members. These three elements form a rigid unit when fastened together.
    Type: Grant
    Filed: January 9, 1978
    Date of Patent: July 31, 1979
    Inventor: Theodore C. DeGroot