Granted Patent
Utility
US 6,318,577 · App. 09/037,899
Threaded drum
Inventors:
Peter G. Suttoni, Jorge Urbano
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: Mar 10, 1998
Inventors
Peter G. Suttoni
Jorge Urbano
Assignee (at issue)
Hoover Materials Handling Group, 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.