Granted Patent
Utility
US 4,306,896 · App. 06/202,880
Filter bag anchoring arrangement
Inventor:
Leonard J. O'Dell
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Nov 3, 1980
Inventor
Leonard J. O'Dell
Assignee (at issue)
AMERICAN AIR FILTER COMPANY, 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.