Granted Patent
Utility
US 5,212,376 · App. 07/891,235
Image scanner with automatic signal compensation using sampled reference light
Inventor:
Raymond Liang
Patented Case
View Patent ↗
Granted: May 18, 1993
Filed: May 29, 1992
Inventor
Raymond Liang
Assignee (at issue)
Primax Electronics Ltd.
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.