Granted Patent
Utility
US 5,238,745 · App. 07/883,223
Protective coating for wood
Inventors:
Andreas Valet, Daniel Rogez, Rolf Tiefenauer
Patented Case
View Patent ↗
Granted: Aug 24, 1993
Filed: May 7, 1992
Inventors
Andreas Valet
Daniel Rogez
Rolf Tiefenauer
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.