Granted Patent
Utility
US 6,584,972 · App. 10/100,322
Respiratory humidification system
Inventor:
Stephen William McPhee
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: Mar 14, 2002
Inventor
Stephen William McPhee
Assignee (at issue)
Fisher & Paykel
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.