Granted Patent
Utility
US 6,681,807 · App. 10/194,243
Asymmetric bidirectional flow device
Inventor:
Gary Byrd
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: Jul 15, 2002
Inventor
Gary Byrd
Assignee (at issue)
Litton Systems, 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.