Granted Patent
Utility
US 4,501,616 · App. 06/162,209
Lubricant and mold-release agent for the manufacture of ties
Inventors:
Hans-Ferdi Fink, Gotz Koerner, Rolf Freiberger
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Jun 23, 1980
Inventors
Hans-Ferdi Fink
Gotz Koerner
Rolf Freiberger
Assignee (at issue)
Th. Goldschmidt. AG
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.