Granted Patent
Utility
US 6,424,810 · App. 09/728,228
System for reduction of contaminant collection system airflow requirements
Inventor:
James M. Chappell
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Nov 30, 2000
Inventor
James M. Chappell
Assignee (at issue)
Xerox Corporation
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.