Granted Patent
Utility
US 5,762,227 · App. 08/668,912
Spreadable circular clamp ring and salvage drum including same
Inventor:
Donald J. Mitchell
Patented Case
View Patent ↗
Granted: Jun 9, 1998
Filed: Jun 24, 1996
Inventor
Donald J. Mitchell
Assignee (at issue)
EAGLE MANUFACTURING 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.