Granted Patent
Utility
US 5,508,720 · App. 08/190,648
Portable telecommunication device with removable electrophoretic display
Inventors:
Frank J. DiSanto, Denis A. Krusos
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Feb 2, 1994
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.