Granted Patent
Utility
US 4,874,933 · App. 07/088,397
Ambient illumination bar code reader
Inventor:
Medford D. Sanner
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: Aug 21, 1987
Inventor
Medford D. Sanner
Assignee (at issue)
Recognition Equipment Incorporated
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.