Granted Patent
Utility
US 6,490,068 · App. 09/285,207
Linear analog optical communication system with two transmitted beams and phase modulation
Inventors:
Donald G. Heflinger, Lee O. Heflinger
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Apr 1, 1999
Inventors
Donald G. Heflinger
Lee O. Heflinger
Assignee (at issue)
TRW Limited
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.