Granted Patent
Utility
US 5,964,449 · App. 09/069,356
Brake valve latch with enhanced lubricity
Inventors:
Walter E. Goettel, George Drahusz, Jr.
Patented Case
View Patent ↗
Granted: Oct 12, 1999
Filed: Apr 29, 1998
Inventors
Walter E. Goettel
George Drahusz, Jr.
Assignee (at issue)
Westinghouse Air Brake Co.
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.