Granted Patent
Utility
US 5,711,206 · App. 08/660,627
Piston and cylinder assembly for minimizing water blow-by in an air compressor
Inventor:
Walter E. Goettel
Patented Case
View Patent ↗
Granted: Jan 27, 1998
Filed: Jun 6, 1996
Inventor
Walter E. Goettel
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.