Patents by Inventor Lehner C. Freborg

Lehner C. Freborg 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).

  • Bubble balancer
    Patent number: 4015481
    Abstract: A pivot head for a bubble balancer has a socket which receives a spherical support member, the socket having a concave top wall which rests on the spherical member and a circular side wall in close proximity to the equator of the spherical member.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: April 5, 1977
    Assignee: Ammco Tools, Inc.
    Inventors: Arthur Kamin, Clifford A. Evans, Lehner C. Freborg