Patents by Inventor William Lefkowitz

William Lefkowitz 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).

  • Patent number: D423053
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: April 18, 2000
    Assignee: Godinger Silver Art Co., Ltd
    Inventor: William Lefkowitz