Granted Patent
Utility
US 5,041,869 · App. 07/574,773
Photoelectric scanner
Inventor:
Beat Frick
Patented Case
View Patent ↗
Granted: Aug 20, 1991
Filed: Aug 30, 1990
Inventor
Beat Frick
Assignee (at issue)
Gretag 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.