Patents by Inventor Alfred L. Marcum

Alfred L. Marcum 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).

  • Machine for fatigue testing of materials
    Patent number: 4248096
    Abstract: A machine for cyclically applying a force to material specimens for testing the fatigue properties thereof. The specimens are positioned between two members, at least one of which moves angularly in a wobble type of action in a cyclic operation. Enclosure members enclose any suitable desired fluid within which the test specimens are tested.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: February 3, 1981
    Assignee: Monsanto Research Corporation
    Inventor: Alfred L. Marcum