Granted Patent
Utility
US 4,445,905 · App. 06/482,168
Process for trichromatic dyeing or printing of polyamide
Inventors:
Harry Schaetzer, Helmut Raisin, Dieter Mausezahl
Patented Case
View Patent ↗
Granted: May 1, 1984
Filed: Apr 5, 1983
Inventors
Harry Schaetzer
Helmut Raisin
Dieter Mausezahl
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.