Granted Patent
Utility
US 5,223,763 · App. 07/661,977
Wind power generator and velocimeter
Inventor:
David B. Chang
Patented Case
View Patent ↗
Granted: Jun 29, 1993
Filed: Feb 28, 1991
Inventor
David B. Chang
Assignee (at issue)
Hughes Aircraft Company
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.