Granted Patent
Utility
US 6,568,541 · App. 09/930,002
Tortuous path filter
Inventors:
Joseph A. Koreis, Monte Koreis, Karl Thomas
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Aug 14, 2001
Inventors
Joseph A. Koreis
Monte Koreis
Karl Thomas
Assignee (at issue)
Clarus Technologies Corp.
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.