Granted Patent
Utility
US 4,263,540 · App. 06/055,086
Two-speed refrigerant motor compressor
Inventors:
George W. Brandt, Charles A. Dubberley
Patented Case
View Patent ↗
Granted: Apr 21, 1981
Filed: Jul 5, 1979
Inventors
George W. Brandt
Charles A. Dubberley
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.