Granted Patent
Utility
US 5,941,245 · App. 08/954,459
Crew oxygen mask with improved comfort control apparatus
Inventors:
Gary R. Hannah, Michael D. Ford
Patented Case
View Patent ↗
Granted: Aug 24, 1999
Filed: Oct 20, 1997
Inventors
Gary R. Hannah
Michael D. Ford
Assignee (at issue)
NELLCOR PURITAN BENNETT LLC
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.