Granted Patent
Utility
US 6,378,322 · App. 09/796,420
High-performance molded fan
Inventor:
Phillip D. Calvert
Patented Case
View Patent ↗
Granted: Apr 30, 2002
Filed: Feb 28, 2001
Inventor
Phillip D. Calvert
Assignee (at issue)
General Shelters of Texas S.B., Ltd.
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.