Granted Patent
Utility
US 5,772,399 · App. 08/171,149
Apparatus and method for efficiency and output capacity matching in a centrifugal fan
Inventors:
Pravinchandra C. Mehta, William A. Smiley, III
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Dec 21, 1993
Inventors
Pravinchandra C. Mehta
William A. Smiley, III
Assignee (at issue)
American Standard 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.