Granted Patent
Utility
US 6,786,138 · App. 10/251,517
Device for preparing milk froth for cappuccino
Inventors:
Michael W. Johnson, David Wheeler
Patented Case
View Patent ↗
Granted: Sep 7, 2004
Filed: Sep 19, 2002
Inventors
Michael W. Johnson
David Wheeler
Assignee (at issue)
Boyd Coffee Company
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.