Granted Patent
Utility
US 5,223,115 · App. 07/752,184
Electrophoretic display with single character erasure
Inventors:
Frank J. DiSanto, Denis A. Krusos
Patented Case
View Patent ↗
Granted: Jun 29, 1993
Filed: Aug 23, 1991
Inventors
Frank J. DiSanto
Denis A. Krusos
Assignee (at issue)
Copytele, 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.