Granted Patent
Utility
US 5,957,132 · App. 08/820,079
Quick-donning full face oxygen mask with inflatable harness and soft foldable lens
Inventors:
Thomas K. McDonald, Gary R. Hannah, Randy G. Stratman, Gregory R. Jones
Patented Case
View Patent ↗
Granted: Sep 28, 1999
Filed: Mar 19, 1997
Inventors
Thomas K. McDonald
Gary R. Hannah
Randy G. Stratman
Gregory R. Jones
Assignee (at issue)
Puritan-Bennett Corporation
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.