Patents by Inventor Andrew A Litwin

Andrew A Litwin 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).

  • Interchangeable jewelry article
    Patent number: D724989
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: March 24, 2015
    Inventor: Andrew A Litwin
  • Interchangeable jewelry article
    Patent number: D724990
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: March 24, 2015
    Inventor: Andrew A Litwin
  • Jewelry article
    Patent number: D814332
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: April 3, 2018
    Inventor: Andrew A. Litwin