Granted Patent
Utility
US 4,762,585 · App. 06/881,512
Process for lining the inner surfaces of pipes or pipe sections
Inventors:
Wolfgang Schneider, Kurt Amsler
Patented Case
View Patent ↗
Granted: Aug 9, 1988
Filed: Jun 30, 1986
Inventors
Wolfgang Schneider
Kurt Amsler
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.