Granted Patent
Utility
US 4,728,337 · App. 06/925,027
Assistant combination and use thereof as wool textile finishing agent
Inventors:
Heinz Abel, Rosemarie Topfl, Franz Gunter
Patented Case
View Patent ↗
Granted: Mar 1, 1988
Filed: Oct 30, 1986
Inventors
Heinz Abel
Rosemarie Topfl
Franz Gunter
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.