Granted Patent
Utility
US 4,517,581 · App. 06/442,054
Photodetector
Inventor:
George H. B. Thompson
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: Nov 16, 1982
Inventor
George H. B. Thompson
Assignee (at issue)
ITT Industries
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.