Granted Patent
Utility
US 4,353,974 · App. 06/237,012
Process for the production of photographic images and photographic materials used in this process
Inventors:
Terence C. Webb, Patrick D. P. Thomas, William E. Long
Patented Case
View Patent ↗
Granted: Oct 12, 1982
Filed: Feb 23, 1981
Inventors
Terence C. Webb
Patrick D. P. Thomas
William E. Long
Assignee (at issue)
Ciba-Geigy
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.