Granted Patent
Utility
US 5,382,136 · App. 08/059,075
Expandable window fan
Inventor:
Jui-Shang Wang
Patented Case
View Patent ↗
Granted: Jan 17, 1995
Filed: May 10, 1993
Inventor
Jui-Shang Wang
Assignee (at issue)
Duracraft Corp.
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.