Granted Patent
Utility
US 4,634,029 · App. 06/823,992
External bottle cap
Inventor:
Hugo Hauser
Patented Case
View Patent ↗
Granted: Jan 6, 1987
Filed: Jan 29, 1986
Inventor
Hugo Hauser
Assignee (at issue)
Tri-Tec Industries Ltd.
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.