Patents by Inventor Raymond S. Gabriele

Raymond S. Gabriele 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).

  • Fish tank filter
    Patent number: 4220530
    Abstract: A fish tank filter having a maze-like passageway with filtering medium therein through which waste water from the fish tank is passed, and a clogging indicator associated with the passageway for signalling the filtering condition of the medium.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: September 2, 1980
    Inventor: Raymond S. Gabriele