Granted Patent
Utility
US 4,238,760 · App. 05/949,346
Multi-spectrum photodiode devices
Inventor:
William N. Carr
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Oct 6, 1978
Inventor
William N. Carr
Assignee (at issue)
Recognition Equipment Incorporated
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.