Granted Patent
Utility
US 6,306,471 · App. 09/405,356
Arborescent concealment artifice
Inventors:
David B. Pitman, Patrick M. Leavy
Patented Case
View Patent ↗
Granted: Oct 23, 2001
Filed: Sep 24, 1999
Inventors
David B. Pitman
Patrick M. Leavy
Assignee (at issue)
Port Midwest International, 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.