Granted Patent
Utility
US 5,742,393 · App. 08/474,027
Optical position calibration system
Inventors:
Richard F. Landau, Edward D. Schultheis
Patented Case
View Patent ↗
Granted: Apr 21, 1998
Filed: Jun 7, 1995
Inventors
Richard F. Landau
Edward D. Schultheis
Assignee (at issue)
Varian, 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.