Patents by Inventor Wilbur Alma Marshall

Wilbur Alma Marshall 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).

  • Hold down arm
    Patent number: 3993298
    Abstract: A horizontally rotatable and elevatable hold down arm that is adapted to engage and securely hold material that is being worked on, such as wood that is being sawed. The hold down arm is simply operated and positioned from the operator's position at the saw.
    Type: Grant
    Filed: June 4, 1975
    Date of Patent: November 23, 1976
    Inventor: Wilbur Alma Marshall