Granted Patent
Utility
US 4,392,580 · App. 06/285,610
Closure cap
Inventor:
Charles S. Ochs
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: Jul 21, 1981
Inventor
Charles S. Ochs
Assignee (at issue)
ANCHOR HOCKING, LLC
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.