Granted Patent
Utility
US 6,283,725 · App. 08/897,277
Aftercooler bypass means for a locomotive compressed air system
Inventors:
Walter E. Goettel, Brian L. Cunkelman, Daniel Wagner, Roger Drummond
Patented Case
View Patent ↗
Granted: Sep 4, 2001
Filed: Jul 21, 1997
Inventors
Walter E. Goettel
Brian L. Cunkelman
Daniel Wagner
Roger Drummond
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.