Granted Patent
Utility
US 4,734,210 · App. 06/888,910
Additives for lubricant compositions
Inventors:
Hugo Camenzind, Paul Dubs
Patented Case
View Patent ↗
Granted: Mar 29, 1988
Filed: Jul 22, 1986
Inventors
Hugo Camenzind
Paul Dubs
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.