Granted Patent
Utility
US 5,190,496 · App. 07/693,303
Window fan
Inventor:
Shao Shih-Chin
Patented Case
View Patent ↗
Granted: Mar 2, 1993
Filed: May 1, 1991
Inventor
Shao Shih-Chin
Assignee (at issue)
Holmes Products Corporation
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.