Granted Patent
Utility
US 4,502,525 · App. 06/031,643
Patterns for a coupler yoke casting
Inventor:
Frank W. Oshinsky
Patented Case
View Patent ↗
Granted: Mar 5, 1985
Filed: Apr 19, 1979
Inventor
Frank W. Oshinsky
Assignee (at issue)
McConway & Torley, LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.