Granted Patent
Utility
US 6,489,581 · App. 09/828,872
Arc-blasting switch possessing a break chamber with low gas compression and reciprocating piston movement
Inventors:
Joel Ozil, Michel Perret
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Apr 10, 2001
Inventors
Joel Ozil
Michel Perret
Assignee (at issue)
ALSTOM Holdings
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.