Granted Patent
Utility
US 4,296,231 · App. 06/145,406
Curable epoxide resin mixtures
Inventors:
Ferdinand Gutekunst, Rolf Schmid
Patented Case
View Patent ↗
Granted: Oct 20, 1981
Filed: May 1, 1980
Inventors
Ferdinand Gutekunst
Rolf Schmid
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.