Granted Patent
Utility
US 5,565,668 · App. 08/475,748
Multiple focus optical system for data reading applications
Inventors:
Brad R. Reddersen, Thomas C. Arends
Patented Case
View Patent ↗
Granted: Oct 15, 1996
Filed: Jun 7, 1995
Inventors
Brad R. Reddersen
Thomas C. Arends
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.