Granted Patent
Utility
US 4,436,022 · App. 06/297,387
Fume hood incorporating high efficiency auxiliary air plenum
Inventors:
Jon A. Zboralski, Harry N. Grow, Stephen E. Holschbach
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Aug 28, 1981
Inventors
Jon A. Zboralski
Harry N. Grow
Stephen E. Holschbach
Assignee (at issue)
Hamilton Industries
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.