Granted Patent
Utility
US 5,311,195 · App. 07/753,190
Combined relative and absolute positioning method and apparatus
Inventors:
Darrell Mathis, Richard F. Poppen, Kenneth A. Milnes
Patented Case
View Patent ↗
Granted: May 10, 1994
Filed: Aug 30, 1991
Inventors
Darrell Mathis
Richard F. Poppen
Kenneth A. Milnes
Assignee (at issue)
Etak, 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.