Granted Patent
Utility
US 4,435,199 · App. 06/371,630
Exhaust system for a vapor deposition chamber
Inventor:
Eugene Potkay
Patented Case
View Patent ↗
Granted: Mar 6, 1984
Filed: Apr 26, 1982
Inventor
Eugene Potkay
Assignee (at issue)
Western Electric Company, 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.