Patents by Inventor Lance G. A. Lof

Lance G. A. Lof 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).

  • Floating pool cover
    Patent number: 4135257
    Abstract: A sheet or film of cover material having a flotation member around the peripheral edge, with the cover material being cut to the size and shape of the surface of the pool to completely cover the water of a swimming pool. In one form, a flotation member is a foamed plastic cylinder encased in a waterproof sheath which is attached to a pocket formed in the sheet periphery.
    Type: Grant
    Filed: July 11, 1977
    Date of Patent: January 23, 1979
    Inventor: Lance G. A. Lof