Granted Patent
Utility
US 5,556,331 · App. 08/371,948
Fume hood with air foil member
Inventor:
John M. Bastian
Patented Case
View Patent ↗
Granted: Sep 17, 1996
Filed: Jan 20, 1995
Inventor
John M. Bastian
Assignee (at issue)
Fisher Hamilton Scientific Inc.
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.