Patents by Inventor Arnold Greenbaum

Arnold Greenbaum 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).

  • Mold clamping fixture
    Patent number: 4402659
    Abstract: A fixture for evenly distributing a predetermined clamping force about annular mating surfaces of a two-piece lens casting mold for avoidance of unwanted cast lens prism and/or edge flash.
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: September 6, 1983
    Assignee: American Optical Corporation
    Inventor: Arnold Greenbaum