Granted Patent
Utility
US 5,172,819 · App. 07/894,727
Bearing assembly for an articulated coupling apparatus which connects adjacent ends of a pair of railway cars together
Inventors:
David W. Daugherety, Jr., Wajih Kanjo, Michael G. Hawryszkow, William D. Wallace, Edward G. Lynch, Jr.
Patented Case
View Patent ↗
Granted: Dec 22, 1992
Filed: Jun 2, 1992
Inventors
David W. Daugherety, Jr.
Wajih Kanjo
Michael G. Hawryszkow
William D. Wallace
Edward G. Lynch, Jr.
Assignees (at issue)
Westinghouse Air Brake Co.
Sargent Industries, Inc.
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.