Patents by Inventor John S. DePrisco

John S. DePrisco 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).

  • Flat head screw
    Patent number: D416475
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: November 16, 1999
    Inventor: John S. DePrisco
  • Screwdriver tip
    Patent number: D423901
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: May 2, 2000
    Inventor: John S. DePrisco