Granted Patent
Utility
US 6,715,989 · App. 09/972,665
Axial fan
Inventors:
Roberto Eduardo Mosiewicz, Ryszard Piekarsky
Patented Case
View Patent ↗
Granted: Apr 6, 2004
Filed: Oct 5, 2001
Inventors
Roberto Eduardo Mosiewicz
Ryszard Piekarsky
Assignee (at issue)
Diandra S.A.
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.