Granted Patent
Utility
US 5,209,764 · App. 07/747,779
Compressed air system with twin air dryers
Inventor:
Charles E. Eberling
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: Aug 20, 1991
Inventor
Charles E. Eberling
Assignee (at issue)
AlliedSignal, Inc.
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.