Granted Patent
Utility
US 4,291,813 · App. 06/100,099
Containers and closures
Inventors:
David O. Allen, Harry A. E. Wombold
Patented Case
View Patent ↗
Granted: Sep 29, 1981
Filed: Dec 4, 1979
Inventors
David O. Allen
Harry A. E. Wombold
Assignee (at issue)
Buckeye Molding 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.