Granted Patent
Utility
US 5,967,747 · App. 09/009,804
Low noise fan
Inventors:
Steven A. Burke, Michael T. Basham, Robert A. Geyer, Laurence A. Jensen
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Jan 20, 1998
Inventors
Steven A. Burke
Michael T. Basham
Robert A. Geyer
Laurence A. Jensen
Assignee (at issue)
TENNANT COMPANY
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.