Patents by Inventor Charles H. Shields

Charles H. Shields 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).

  • Heating system for machine operator's cab
    Patent number: 4192456
    Abstract: A machine, such as a self-propelled mobile crane, having an operator's cab and an engine for driving hydraulic pumps to supply fluid to hydraulic motors which drive crane components, is provided with a heating system for the operator's cab.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: March 11, 1980
    Assignee: Harnischfeger Corporation
    Inventors: Charles H. Shields, Gary D. Kane