Granted Patent
Utility
US 4,566,210 · App. 06/503,515
Display device
Inventors:
Donald Winrow, Kenneth G. Copeland
Patented Case
View Patent ↗
Granted: Jan 28, 1986
Filed: Jun 13, 1983
Inventors
Donald Winrow
Kenneth G. Copeland
Assignee (at issue)
NEI Canada Limited
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.