Granted Patent
Utility
US 4,464,579 · App. 06/389,524
Derrieus wind turbine electric generating system
Inventor:
Edward L. Schwarz
Patented Case
View Patent ↗
Granted: Aug 7, 1984
Filed: Jun 17, 1982
Inventor
Edward L. Schwarz
Assignee (at issue)
Control Data 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.