Granted Patent
Utility
US 5,901,464 · App. 08/979,649
E-1 twin tower air dryer for an air compressor unit
Inventors:
Michael V. Kazakis, Scott M. Trapp, T. Kevin Castle
Patented Case
View Patent ↗
Granted: May 11, 1999
Filed: Nov 26, 1997
Inventors
Michael V. Kazakis
Scott M. Trapp
T. Kevin Castle
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.