Granted Patent
Utility
US 4,940,328 · App. 07/267,212
Optical sensing apparatus and method
Inventor:
Nile F. Hartman
Patented Case
View Patent ↗
Granted: Jul 10, 1990
Filed: Nov 4, 1988
Inventor
Nile F. Hartman
Assignee (at issue)
GEORGIA TECH RESEARCH 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.