Granted Patent
Utility
US 4,409,604 · App. 06/222,830
Electrostatic imaging device
Inventor:
Richard A. Fotland
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: Jan 5, 1981
Inventor
Richard A. Fotland
Assignee (at issue)
Dennison Manufacturing Company
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.