Granted Patent
Utility
US 5,517,986 · App. 08/128,984
Two-point/four-point adjustable headgear for gas delivery mask
Inventors:
Eric W. Starr, Mary T. Walthour
Patented Case
View Patent ↗
Granted: May 21, 1996
Filed: Sep 28, 1993
Inventors
Eric W. Starr
Mary T. Walthour
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.