Granted Patent
Utility
US 4,351,442 · App. 06/217,409
Child-resistant safety closure
Inventor:
Kenneth L. Summers
Patented Case
View Patent ↗
Granted: Sep 28, 1982
Filed: Dec 17, 1980
Inventor
Kenneth L. Summers
Assignee (at issue)
RIEKE 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.