Granted Patent
Utility
US 4,818,320 · App. 06/882,046
Nasal cannula harness and method of making the same
Inventor:
Edwin G. Weichselbaum
Patented Case
View Patent ↗
Granted: Apr 4, 1989
Filed: Jul 3, 1986
Inventor
Edwin G. Weichselbaum
Assignee (at issue)
Sherwood Medical Company
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.