Granted Patent
Utility
US 5,290,441 · App. 08/005,031
Integrated collar, filter bag, cage and locking ring assembly for baghouses
Inventors:
James W. Griffin, Billy A. Bunn, Darrell Dunning, Larry E. Patterson
Patented Case
View Patent ↗
Granted: Mar 1, 1994
Filed: Jan 15, 1993
Inventors
James W. Griffin
Billy A. Bunn
Darrell Dunning
Larry E. Patterson
Assignee (at issue)
Hosokawa Micron International Inc.
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.