Granted Patent
Utility
US 4,489,419 · App. 06/617,829
Data communication system
Inventor:
An-Li Wang
Patented Case
View Patent ↗
Granted: Dec 18, 1984
Filed: Jun 6, 1984
Inventor
An-Li Wang
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.