Granted Patent
Utility
US 4,759,464 · App. 07/050,278
Safe opening container lid
Inventor:
Keiji Taniuchi
Patented Case
View Patent ↗
Granted: Jul 26, 1988
Filed: Mar 25, 1987
Inventor
Keiji Taniuchi
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.