Patents by Inventor Randolph E. Slone

Randolph E. Slone 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).

  • Mine machine light
    Patent number: D250970
    Type: Grant
    Filed: May 25, 1977
    Date of Patent: January 30, 1979
    Assignee: McJunkin Corporation
    Inventors: H. P. McJunkin, Jr., Randolph E. Slone