Patents by Inventor Albert M. Levett

Albert M. Levett 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).

  • Plant protection device
    Patent number: 4160340
    Abstract: A heavy, immobile ground based enclosure surrounds growing plants. A cover assembly is removably engaged on the enclosure during periods of inclement or unfavorable weather, and is maintained in place by releasable engagement means. The cover assembly has ventilation means, heat transfer means, and liquid spray means associated therewith.
    Type: Grant
    Filed: November 17, 1977
    Date of Patent: July 10, 1979
    Inventor: Albert M. Levett