Patents by Inventor Mart O. Ledbetter

Mart O. Ledbetter 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: 5048892
    Abstract: An elongate longitudinally aligned cushion member mounted about a selective frame portion of an associated lawn chair to effect desired cushioning relative to the lawn chair structure. The organization is defined by a tubular member, including a coaxially aligned board directed therethrough. A modification of the invention includes an elongate member defined by a serpentine exterior configuration defining parallel ribs, with the member including a pneumatic chamber therewithin and further including an overlying fluid chamber and an underlying chamber formed of a resilient pad-like member.
    Type: Grant
    Filed: September 7, 1990
    Date of Patent: September 17, 1991
    Inventor: Mart O. Ledbetter
  • Patent number: D330631
    Type: Grant
    Filed: October 19, 1990
    Date of Patent: November 3, 1992
    Inventor: Mart O. Ledbetter