Granted Patent
Utility
US 4,967,647 · App. 07/402,470
Air supply for a coffee maker
Inventor:
Alan M. King
Patented Case
View Patent ↗
Granted: Nov 6, 1990
Filed: Sep 5, 1989
Inventor
Alan M. King
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.