Granted Patent
Utility
US 5,090,974 · App. 07/670,972
Separator for a vacuum cleaner system
Inventors:
Gary A. Kasper, Roy O. Erickson, Jr., Dean R. Rohn, Steven R. Selewski, Craig Cummins
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Mar 18, 1991
Inventors
Gary A. Kasper
Roy O. Erickson, Jr.
Dean R. Rohn
Steven R. Selewski
Craig Cummins
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.