Granted Patent
Utility
US 6,575,696 · App. 09/951,277
Method of sound attenuation in centrifugal blowers
Inventors:
Leslie A. Lyons, David A. Fisher
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Sep 11, 2001
Inventors
Leslie A. Lyons
David A. Fisher
Assignee (at issue)
Fasco Industries, 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.