Patents by Inventor Joseph L. O'Lear

Joseph L. O'Lear 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 car truck
    Patent number: D251901
    Type: Grant
    Filed: January 16, 1978
    Date of Patent: May 22, 1979
    Assignee: Huwood-Irwin Co.
    Inventor: Joseph L. O'Lear
  • Truck for a rail traversing car
    Patent number: D284560
    Type: Grant
    Filed: April 21, 1983
    Date of Patent: July 8, 1986
    Assignee: Huwood-Irwin Co.
    Inventor: Joseph L. O'Lear