Granted Patent
Utility
US 6,672,839 · App. 09/991,218
Fan wheel
Inventor:
Eugen Schloetzer
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Nov 16, 2001
Inventor
Eugen Schloetzer
Assignee (at issue)
HP Intellectual Corp.
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.