Granted Patent
Utility
US 6,074,095 · App. 09/251,068
Four member valve closure assembly for valve bags
Inventors:
Roger Bannister, John Aiken, Michael A. Berry
Patented Case
View Patent ↗
Granted: Jun 13, 2000
Filed: Feb 16, 1999
Inventors
Roger Bannister
John Aiken
Michael A. Berry
Assignee (at issue)
Bemis Associates, 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.