Granted Patent
Utility
US 4,073,371 · App. 05/631,936
Apparatus and circuits for two-color printing in electronic impact printers
Inventor:
Jay Prager
Patented Case
View Patent ↗
Granted: Feb 14, 1978
Filed: Nov 14, 1975
Inventor
Jay Prager
Assignee (at issue)
Centronics Data Computer 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.