Granted Patent
Utility
US 6,244,821 · App. 09/253,589
Low speed cooling fan
Inventors:
Walter K. Boyd, William C. Fairbank
Patented Case
View Patent ↗
Granted: Jun 12, 2001
Filed: Feb 19, 1999
Inventors
Walter K. Boyd
William C. Fairbank
Assignee (at issue)
Mechanization Systems Company, 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.