Granted Patent
Utility
US 6,409,374 · App. 09/846,140
Beverage tasting vessel with aerating ridges and agitating ribs
Inventor:
Boyd I. Willat
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Apr 30, 2001
Inventor
Boyd I. Willat
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.