Granted Patent
Utility
US 4,439,329 · App. 06/335,119
Aqueous based fire fighting foam compositions containing hydrocarbyl sulfide terminated oligomer stabilizers
Inventors:
Eduard K. Kleiner, Robert A. Falk
Patented Case
View Patent ↗
Granted: Mar 27, 1984
Filed: Dec 28, 1981
Inventors
Eduard K. Kleiner
Robert A. Falk
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.