Granted Patent
Utility
US 4,392,579 · App. 06/313,394
Closure with domed portion
Inventors:
Albert R. Uhlig, Long F. Chang
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: Oct 21, 1981
Inventors
Albert R. Uhlig
Long F. Chang
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.