Granted Patent
Utility
US 5,285,235 · App. 07/950,670
Photographic copying apparatus and operating process
Inventor:
Beat Frick
Patented Case
View Patent ↗
Granted: Feb 8, 1994
Filed: Sep 25, 1992
Inventor
Beat Frick
Assignee (at issue)
Gretag Imaging AG
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.