Granted Patent
Utility
US 6,481,233 · App. 10/096,620
High-performance molded fan
Inventor:
Phillip D. Calvert
Patented Case
View Patent ↗
Granted: Nov 19, 2002
Filed: Mar 12, 2002
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.