Granted Patent
Utility
US 6,502,392 · App. 09/130,083
Induction cooled exhaust filtration system
Inventor:
Norbert Paas
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Aug 7, 1998
Inventor
Norbert Paas
Assignee (at issue)
Dry Systems Technologies
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.