Patents by Inventor Irvin J. Spaeth

Irvin J. Spaeth 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).

  • Railway brake beam head
    Patent number: 3976170
    Abstract: Railway brake beam head adapted for selective mounting of cast iron shoe or composition shoe and adapted to reject either type of shoe after having been selected for mounting the other type.
    Type: Grant
    Filed: June 13, 1975
    Date of Patent: August 24, 1976
    Assignee: Evans Products Company
    Inventor: Irvin J. Spaeth