Granted Patent
Utility
US 4,138,028 · App. 05/897,316
Child-resistant safety closure
Inventors:
James H. Price, Ned J. Smalley
Patented Case
View Patent ↗
Granted: Feb 6, 1979
Filed: Apr 20, 1978
Inventors
James H. Price
Ned J. Smalley
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.