Granted Patent
Utility
US 5,881,898 · App. 08/584,410
Open top drum having ribbed chime
Inventors:
Patrick Irwin, William C. Fields
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Jan 11, 1996
Inventors
Patrick Irwin
William C. Fields
Assignee (at issue)
Sonoco Products Company
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.