Granted Patent
Utility
US 6,772,758 · App. 10/108,822
Breathing protector
Inventor:
Hans Lambert
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Jul 30, 2002
Inventor
Hans Lambert
Assignee (at issue)
Atos Medical
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.