Granted Patent
Utility
US 4,629,682 · App. 06/717,096
Recording material for color photography
Inventors:
David G. Leppard, Jean Rody
Patented Case
View Patent ↗
Granted: Dec 16, 1986
Filed: Mar 28, 1985
Inventors
David G. Leppard
Jean Rody
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.