Granted Patent
Utility
US 4,570,572 · App. 06/717,257
Electrographic development apparatus
Inventors:
Kelly S. Robinson, Richard A. Weitzel, Arthur S. Kroll
Patented Case
View Patent ↗
Granted: Feb 18, 1986
Filed: Mar 28, 1985
Inventors
Kelly S. Robinson
Richard A. Weitzel
Arthur S. Kroll
Assignee (at issue)
EASTMAN KODAK 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.