Granted Patent
Utility
US 5,423,129 · App. 07/992,319
Desiccant cartridge of an air dryer
Inventors:
T. Kevin Castle, Michael V. Kazakis
Patented Case
View Patent ↗
Granted: Jun 13, 1995
Filed: Dec 21, 1992
Inventors
T. Kevin Castle
Michael V. Kazakis
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.