Granted Patent
Utility
US 5,174,706 · App. 07/818,916
Process for producing a safe opening container lid
Inventor:
Keiji Taniuchi
Patented Case
View Patent ↗
Granted: Dec 29, 1992
Filed: Jan 10, 1992
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.