Patents by Inventor David X. Phillips

David X. Phillips 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).

  • Roof rake
    Patent number: 4791780
    Abstract: The rake of this invention has an "S" shaped angled handle allowing a person to rake in a forward sweeping motion. Two rows of teeth facing in an opposite direction from one another are necessary so one can use the raking device from the left or right on one's self.
    Type: Grant
    Filed: March 2, 1987
    Date of Patent: December 20, 1988
    Inventor: David X. Phillips