Granted Patent
Utility
US 4,947,159 · App. 07/182,436
Power supply apparatus capable of multi-mode operation for an electrophoretic display panel
Inventors:
Frank J. Di Santo, Denis A. Krusos
Patented Case
View Patent ↗
Granted: Aug 7, 1990
Filed: Apr 18, 1988
Inventors
Frank J. Di Santo
Denis A. Krusos
Assignee (at issue)
501 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.