Granted Patent
Utility
US 4,664,108 · App. 06/614,027
Oxygen supply system and device therefor
Inventor:
William K. Ansite
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: May 25, 1984
Inventor
William K. Ansite
Assignee (at issue)
Figgie Inernational 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.