Granted Patent
Utility
US 4,763,347 · App. 07/015,409
Control system, electronically commutated motor system, blower apparatus and methods
Inventor:
David M. Erdman
Patented Case
View Patent ↗
Granted: Aug 9, 1988
Filed: Feb 17, 1987
Inventor
David M. Erdman
Assignee (at issue)
General Electric 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.