Granted Patent
Utility
US 6,210,342 · App. 09/391,165
Bi-directional partial re-breathing method
Inventors:
Kai Kuck, Joseph Orr
Patented Case
View Patent ↗
Granted: Apr 3, 2001
Filed: Sep 8, 1999
Inventors
Kai Kuck
Joseph Orr
Assignee (at issue)
NTC Technology, 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.