Granted Patent
Utility
US 4,276,243 · App. 06/137,148
Vapor delivery control system and method
Inventor:
Fred P. Partus
Patented Case
View Patent ↗
Granted: Jun 30, 1981
Filed: Apr 4, 1980
Inventor
Fred P. Partus
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.