Granted Patent
Utility
US 4,272,151 · App. 06/089,759
Apparatus for optical scanning
Inventor:
N. Balasubramanian
Patented Case
View Patent ↗
Granted: Jun 9, 1981
Filed: Oct 30, 1979
Inventor
N. Balasubramanian
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.