Granted Patent
Utility
US 5,609,530 · App. 08/522,442
Dynamic lie determination device and method
Inventor:
Joseph H. Butler
Patented Case
View Patent ↗
Granted: Mar 11, 1997
Filed: Aug 31, 1995
Inventor
Joseph H. Butler
Assignee (at issue)
Emhart 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.