Granted Patent
Utility
US 6,306,199 · App. 09/552,275
Separator with multiple function vanes for a vacuum cleaner apparatus
Inventors:
Eric Lee Gustafson, Jeffrey R. Kassien
Patented Case
View Patent ↗
Granted: Oct 23, 2001
Filed: Apr 19, 2000
Inventors
Eric Lee Gustafson
Jeffrey R. Kassien
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.