Granted Patent
Utility
US 4,117,950 · App. 05/843,513
Plastic closure
Inventor:
David O. Allen
Patented Case
View Patent ↗
Granted: Oct 3, 1978
Filed: Oct 19, 1977
Inventor
David O. Allen
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.