Granted Patent
Utility
US 4,452,528 · App. 06/356,439
Optical reproduction method and apparatus
Inventor:
Günter Rath
Patented Case
View Patent ↗
Granted: Jun 5, 1984
Filed: Mar 9, 1982
Inventor
Günter Rath
Assignee (at issue)
W. C. Heraeus GmbH
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.