Granted Patent
Utility
US 4,348,203 · App. 06/166,628
Dyeing process
Inventors:
James K. Skelly, David G. Evans, Barrie Broadbent
Patented Case
View Patent ↗
Granted: Sep 7, 1982
Filed: Jul 7, 1980
Inventors
James K. Skelly
David G. Evans
Barrie Broadbent
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.