Granted Patent
Utility
US 6,523,544 · App. 09/763,734
Fan-assisted ashtray
Inventors:
Mitchell Ritter, Jacques Berset, Thomas Riedel, Oliver Ferguson
Patented Case
View Patent ↗
Granted: Feb 25, 2003
Filed: Apr 11, 2001
Inventors
Mitchell Ritter
Jacques Berset
Thomas Riedel
Oliver Ferguson
Assignee (at issue)
Philip Morris Inc.
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.