Patents by Inventor David Rosenwasser

David Rosenwasser 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).

  • Modified gap for jewelry rope chain link
    Patent number: 6158206
    Abstract: A double helix jewelry chain is constructed from a series of interconnected chain links. Each link is formed with an open mouth defined between a pair of end faces. The end faces are aligned with one another in various predetermined geometrical and dimensional relationships in order to maintain a minimum projected gap or clearance opening equal to or less than the major dimension of an elongated cross section of each link.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: December 12, 2000
    Assignee: D&W Jewelry, Inc.
    Inventors: David Rosenwasser, Avram Moshe Rosenwasser