Patents by Inventor Lee M. Kelley

Lee M. Kelley 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).

  • Solar heat collector
    Patent number: 4325360
    Abstract: A solar collector formed of lightweight concrete wherein zones of higher and lower density concrete are used to form the integral unitary structure. The collector is suspended from an absorber pipe by support means included in the high density zones of concrete.
    Type: Grant
    Filed: April 1, 1981
    Date of Patent: April 20, 1982
    Inventor: Lee M. Kelley