Patents by Inventor Larry D. Christopher

Larry D. Christopher 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).

  • Moisture-proof spa cover and method of construction
    Patent number: 5086525
    Abstract: An improved design and method of construction for spa or hot tub covers. The top panel and bottom panel of a first cover are each unitary and are heat sealed together to provide a superior moisture-proof cover. A second cover is constructed in the same manner and the two covers are hingedly attached together with a heat sealed flange integral with the top and bottom panels of each cover.
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: February 11, 1992
    Inventor: Larry D. Christopher