Patents by Inventor Pierino Maruffi

Pierino Maruffi 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).

  • Jewelry chain
    Patent number: D321148
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: October 29, 1991
    Assignee: S.I.L.O.-Societa Italiana Lavorazione Oro S.p.A.
    Inventors: Stefano Chiaramonti, Piero C. Ferruzzi, Pierino Maruffi
  • Continuous jewelry chain
    Patent number: D346131
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: April 19, 1994
    Inventors: Stefano Chiaramonti, Piero C. Ferruzzi, Pierino Maruffi