Granted Patent
Utility
US 5,309,199 · App. 08/014,255
Process for the production of photographic copies from photographic copy masters on a photographic copy apparatus
Inventor:
Beat Frick
Patented Case
View Patent ↗
Granted: May 3, 1994
Filed: Feb 5, 1993
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.