Granted Patent
Utility
US 4,142,301 · App. 05/842,634
Method and apparatus for drying photographic material
Inventor:
Charles C. O. Goodall
Patented Case
View Patent ↗
Granted: Mar 6, 1979
Filed: Oct 17, 1977
Inventor
Charles C. O. Goodall
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.