Patents by Inventor Lawrence C. Dalessandro

Lawrence C. Dalessandro 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).

  • Self-cleaning water filter system
    Patent number: 4786420
    Abstract: A self-cleaning water filter system for a household or the like having a plurality of water usage zones requiring varying water quality.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: November 22, 1988
    Inventor: Lawrence C. Dalessandro