Granted Patent
Utility
US 6,663,698 · App. 10/233,787
Fume extraction apparatus and assembly
Inventors:
Artem Mishin, Mark J. Cowell
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Apr 25, 2002
Inventors
Artem Mishin
Mark J. Cowell
Assignee (at issue)
Delaware Capital Formation, 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.