Granted Patent
Utility
US 4,215,355 · App. 05/963,404
Improved electrographic recording apparatus employing an improved drive circuit
Inventor:
Chad Moore
Patented Case
View Patent ↗
Granted: Jul 29, 1980
Filed: Nov 24, 1978
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.