Granted Patent
Utility
US 4,717,828 · App. 06/780,341
Laser communication system
Inventor:
Chi-Sheng Liu
Patented Case
View Patent ↗
Granted: Jan 5, 1988
Filed: Sep 26, 1985
Inventor
Chi-Sheng Liu
Assignee (at issue)
Westinghouse Electric Company LLC
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.