Granted Patent
Utility
US 4,596,733 · App. 06/567,213
Electroerosion recording material with polyorganosiloxane overlayer
Inventors:
Mitchell S. Cohen, Keith S. Pennington, Krishna G. Sachdev, William D. Weber
Patented Case
View Patent ↗
Granted: Jun 24, 1986
Filed: Dec 30, 1983
Inventors
Mitchell S. Cohen
Keith S. Pennington
Krishna G. Sachdev
William D. Weber
Assignee (at issue)
International Business Machines 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.