Granted Patent
Utility
US 6,565,637 · App. 10/128,107
Filter assembly for a vacuum cleaner
Inventors:
John J. Alberts, III, William H. Schmid, Scott Zaremba
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Apr 23, 2002
Inventors
John J. Alberts, III
William H. Schmid
Scott Zaremba
Assignee (at issue)
REXAIR LLC
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.