Granted Patent
Utility
US 5,228,312 · App. 07/716,072
Method and apparatus for dispensing cold beverages
Inventor:
Warren Williams
Patented Case
View Patent ↗
Granted: Jul 20, 1993
Filed: Jun 17, 1991
Inventor
Warren Williams
Assignee (at issue)
Wilshire Partners
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.