Granted Patent
Utility
US 6,692,346 · App. 10/126,285
Fume hood with alarm system
Inventors:
John M. Bastian, Anthony Castelli
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Apr 19, 2002
Inventors
John M. Bastian
Anthony Castelli
Assignee (at issue)
FISHER HAMILTON, L.L.C.
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.