Granted Patent
Utility
US 5,630,354 · App. 08/607,477
Extended life brake cylinder holder
Inventors:
James C. Hoffner, Patricia T. Karczewski, Julie A. Krawczyk
Patented Case
View Patent ↗
Granted: May 20, 1997
Filed: Feb 27, 1996
Inventors
James C. Hoffner
Patricia T. Karczewski
Julie A. Krawczyk
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.