Granted Patent
Utility
US 6,357,440 · App. 09/333,682
Pliable respiratory mask
Inventors:
Gary L. Hansen, Nicole Denise Bloom
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Jun 16, 1999
Inventors
Gary L. Hansen
Nicole Denise Bloom
Assignee (at issue)
MALLINCKRODT 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.