Granted Patent
Utility
US 4,379,969 · App. 06/237,559
Corona charging apparatus
Inventors:
Harold W. Cobb, Richard A. Fotland
Patented Case
View Patent ↗
Granted: Apr 12, 1983
Filed: Feb 24, 1981
Inventors
Harold W. Cobb
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.