Granted Patent
Utility
US 5,492,116 · App. 08/254,408
Respiratory mask with floating seal responsive to pressurized gas
Inventors:
Eugene N. Scarberry, Patrick M. Handke
Patented Case
View Patent ↗
Granted: Feb 20, 1996
Filed: Jun 3, 1994
Inventors
Eugene N. Scarberry
Patrick M. Handke
Assignee (at issue)
Respironics, 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.