Granted Patent
Utility
US 4,636,579 · App. 06/712,838
Retractable power supply
Inventors:
Joseph J. Hanak, James A. Young, Bert Kuypers, Richard Blieden
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Mar 18, 1985
Inventors
Joseph J. Hanak
James A. Young
Bert Kuypers
Richard Blieden
Assignee (at issue)
Energy Conversion Devices, Inc.
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.