Granted Patent
Utility
US 4,477,608 · App. 06/520,938
Compositions containing graphite
Inventors:
Fridolin Babler, Adolf Weissmuller
Patented Case
View Patent ↗
Granted: Oct 16, 1984
Filed: Aug 8, 1983
Inventors
Fridolin Babler
Adolf Weissmuller
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.