Granted Patent
Utility
US 5,164,765 · App. 07/745,890
Exposure control process and photographic copying apparatus
Inventors:
Christa Strobel, Rolf Bronnimann
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Aug 16, 1991
Inventors
Christa Strobel
Rolf Bronnimann
Assignee (at issue)
Gretag Systems, Inc.
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.