Granted Patent
Utility
US 4,967,744 · App. 07/266,556
Flexible breathing circuit
Inventor:
James Chua
Patented Case
View Patent ↗
Granted: Nov 6, 1990
Filed: Nov 3, 1988
Inventor
James Chua
Assignee (at issue)
Airoflex Medical, 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.