Patents by Inventor Robert George Powell

Robert George Powell 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).

  • Hinge for jewelry and the like
    Patent number: 4114238
    Abstract: The invention provides a miniature hinge for jewelry and the like, made from metal pressings, by making each leaf of the hinge from two laminations of which one provides the hinge knuckle and the other forms a limit stop.
    Type: Grant
    Filed: April 13, 1977
    Date of Patent: September 19, 1978
    Assignee: Harman Brother Limited
    Inventor: Robert George Powell