Granted Patent
Utility
US 4,560,396 · App. 06/642,589
Down flow filter panel dust collector
Inventor:
Leonard J. O'Dell
Patented Case
View Patent ↗
Granted: Dec 24, 1985
Filed: Aug 20, 1984
Inventor
Leonard J. O'Dell
Assignee (at issue)
Allis-Chalmers Corporation
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.