Granted Patent
Utility
US 6,802,770 · App. 10/308,932
Ventilating exhaust fan
Inventors:
David M. Larson, Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Alan G. Klug, Kevin P. Gahagan
Patented Case
View Patent ↗
Granted: Oct 12, 2004
Filed: Dec 3, 2002
Inventors
David M. Larson
Robert G. Penlesky
Daniel L. Karst
Robert A. Chvosta
Alan G. Klug
Kevin P. Gahagan
Assignee (at issue)
Broan-NuTone LLC
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.