Granted Patent
Utility
US 4,909,608 · App. 07/122,082
Optical monlinearity of aminobenzophenone derivatives
Inventor:
Claude C. Frazier
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Nov 17, 1987
Inventor
Claude C. Frazier
Assignee (at issue)
LOCKHEED MARTIN 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.