Granted Patent
Utility
US 4,440,107 · App. 06/397,190
Magnetic apparatus for reducing substrate warpage
Inventors:
Joachim Doehler, Vincent D. Cannella, Richard O. Gray, Jr.
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Jul 12, 1982
Inventors
Joachim Doehler
Vincent D. Cannella
Richard O. Gray, Jr.
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.