Patents by Inventor Parley P. Johnson

Parley P. Johnson 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 powered aircraft warning device
    Patent number: 5537111
    Abstract: A solar-powered, illuminated aircraft warning marker for connection to suspended cables and overhead transmission lines includes a polygonal housing having a plurality of light elements attached to different sides of the housing. The warning marker includes solar cells, storage batteries and electrical circuit apparatus for selectively illuminating the light elements during low ambient light and nighttime conditions.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: July 16, 1996
    Inventors: John S. Martin, John H. Hapgood, Clarence Rash, Parley P. Johnson