Granted Patent
Utility
US 4,553,976 · App. 06/570,255
Process for dyeing or printing polyamide fibres
Inventors:
Helmut Raisin, Bernard C. Teutelink
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Jan 12, 1984
Inventors
Helmut Raisin
Bernard C. Teutelink
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.