Granted Patent
Utility
US 4,934,867 · App. 07/332,044
Sealing device ensuring lateral tightness of a weir gate
Inventors:
Michel Cardis, Bruno Basset
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Apr 3, 1989
Inventors
Michel Cardis
Bruno Basset
Assignee (at issue)
NEYRPIC
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.