Granted Patent
Utility
US 5,331,822 · App. 08/015,600
Device for cooling chemical smoke
Inventors:
Richard S. Belliveau, Jeffrey T. Maddox
Patented Case
View Patent ↗
Granted: Jul 26, 1994
Filed: Feb 10, 1993
Inventors
Richard S. Belliveau
Jeffrey T. Maddox
Assignee (at issue)
High End Systems 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.