Granted Patent
Utility
US 6,769,352 · App. 10/363,241
Apparatus for preparing a coffee extract with a fine-bubble froth layer using a rough impact surface
Inventors:
Wilhelmus Johannes de Bruin, Gustaaf Frans Brouwer
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Jul 31, 2003
Inventors
Wilhelmus Johannes de Bruin
Gustaaf Frans Brouwer
Assignee (at issue)
Sara Lee/ DE N.V.
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.