Granted Patent
Utility
US 4,088,239 · App. 05/799,866
Plastic drum and metal handling ring
Inventor:
Albert R. Uhlig
Patented Case
View Patent ↗
Granted: May 9, 1978
Filed: May 23, 1977
Inventor
Albert R. Uhlig
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.