Granted Patent
Utility
US 4,330,720 · App. 06/118,278
Electrographic recording apparatus employing an improved drive circuit
Inventor:
Chad Moore
Patented Case
View Patent ↗
Granted: May 18, 1982
Filed: Feb 4, 1980
Inventor
Chad Moore
Assignee (at issue)
Gould Inc.
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.