Granted Patent
Utility
US 4,719,474 · App. 06/757,129
Apparatus for imaging text and graphics on photosensitive material
Inventors:
Walter Hansen, Herbert Klepper
Patented Case
View Patent ↗
Granted: Jan 12, 1988
Filed: Jul 19, 1985
Inventors
Walter Hansen
Herbert Klepper
Assignee (at issue)
Rudolf Hell 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.