Patents by Inventor Frederick A. Graham

Frederick A. Graham 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).

  • Overhead guard for lift trucks
    Patent number: 3933371
    Abstract: A protective overhead guard device for lift trucks includes a rigid rear leg construction connected to the rear ends of the side members of the overhead guard canopy for adjustment pivotally to a plurality of positions, said connections to the side members being fixed and rigid. The lower ends of the legs connect to adjustable brackets for different longitudinal adjusted positions of the counterweight.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: January 20, 1976
    Assignee: Clark Equipment Company
    Inventor: Frederick A. Graham