Granted Patent
Utility
US 5,930,741 · App. 08/780,523
Accurate, rapid, reliable position sensing using multiple sensing technologies
Inventor:
James F. Kramer
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Jan 7, 1997
Inventor
James F. Kramer
Assignee (at issue)
Virtual Technologies, 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.