Patents by Inventor Frederik Ferstenberg

Frederik Ferstenberg 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).

  • Device for setting precious stones
    Patent number: 4329890
    Abstract: Device for setting precious stones in bezels with claws, mounted on rings or similar, characterized by the combination of: a receptacle; a support for a ring or similar at least partially engageable into said receptacle; a device for maintaining a stone placed into the bezel of ring or similar, said support being engaged into the receptacle and a setting device, all aforesaid devices and support being functionally integral with one another at least when the device is in setting position.
    Type: Grant
    Filed: June 18, 1980
    Date of Patent: May 18, 1982
    Inventor: Frederik Ferstenberg