Granted Patent
Utility
US 5,115,270 · App. 07/595,111
Photographic color copying apparatus and exposure control process
Inventors:
Walter Kraft, Jurgen Nehring
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Sep 28, 1990
Inventors
Walter Kraft
Jurgen Nehring
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.