Patents by Inventor Anthony M. Spigarelli

Anthony M. Spigarelli 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).

  • Aggregate leveling rake
    Patent number: 4720208
    Abstract: A rake for leveling aggregate, such as one-half to two-inch size aggregate used in roofing or landscaping applications, is comprised of a heavy, rigid, generally vertically disposed frame including a downwardly depending portion extending thereunder for immersion, submersion and movement through a volume of aggregate to be levelled over a flexible membrane. The downwardly depending portion has rounded ends and may be of a symmetrical serpentine shape intermediate the ends.
    Type: Grant
    Filed: June 26, 1986
    Date of Patent: January 19, 1988
    Inventor: Anthony M. Spigarelli