Granted Patent
Utility
US 4,965,212 · App. 07/386,623
Optical sensor
Inventor:
Metin Aktik
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: Jul 31, 1989
Inventor
Metin Aktik
Assignee (at issue)
Mitel Corporation
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.