Granted Patent
Utility
US 6,679,261 · App. 09/935,778
Forehead support for facial mask
Inventors:
Perry David Lithgow, Robert Edward Styles, Zdzislaw Antoni Ziolkowski, Philip Rodney Kwok
Patented Case
View Patent ↗
Granted: Jan 20, 2004
Filed: Aug 24, 2001
Inventors
Perry David Lithgow
Robert Edward Styles
Zdzislaw Antoni Ziolkowski
Philip Rodney Kwok
Assignee (at issue)
Resmed 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.