Granted Patent
Utility
US 4,488,668 · App. 06/417,950
Two-piece sifter closure for fillable container
Inventors:
Joseph M. Flaska, Robert F. Wittemann
Patented Case
View Patent ↗
Granted: Dec 18, 1984
Filed: Sep 14, 1982
Inventors
Joseph M. Flaska
Robert F. Wittemann
Assignee (at issue)
Johnson & Johnson Baby Products 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.