Granted Patent
Utility
US 5,347,121 · App. 07/992,932
Variable focus optical system for data reading
Inventor:
Robert W. Rudeen
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Dec 18, 1992
Inventor
Robert W. Rudeen
Assignee (at issue)
Spectra-Physics Scanning Systems, 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.