Granted Patent
Utility
US 4,821,048 · App. 07/228,855
Area exposure apparatus for exposing an area of text on a recording carrier and method for conducting the area exposure
Inventors:
Klaus-Jurgen Hornig, Hans-Henning Thiessen
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Aug 3, 1988
Inventors
Klaus-Jurgen Hornig
Hans-Henning Thiessen
Assignee (at issue)
Linotype 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.