Granted Patent
Utility
US 6,830,433 · App. 10/212,464
Tower fan
Inventors:
Walter Birdsell, David L. Feer, William Montague
Patented Case
View Patent ↗
Granted: Dec 14, 2004
Filed: Aug 5, 2002
Inventors
Walter Birdsell
David L. Feer
William Montague
Assignee (at issue)
KAZ, 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.