Granted Patent
Utility
US 4,790,308 · App. 06/596,754
Nasal cannula harness
Inventor:
Edwin G. Weichselbaum
Patented Case
View Patent ↗
Granted: Dec 13, 1988
Filed: Apr 4, 1984
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.