Granted Patent
Utility
US 4,294,374 · App. 05/876,081
Plastic drum assembly
Inventor:
Geoffrey C. Ames
Patented Case
View Patent ↗
Granted: Oct 13, 1981
Filed: Feb 8, 1978
Inventor
Geoffrey C. Ames
Assignee (at issue)
Owens-Illinois 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.