| http://www.w3.org/ns/prov#value | - Associated with each light-display- [72] Inventors zr t w Mm both f ing element is a photoconductor or other light-responsive device for activating the light-displaying elements. [73] Assignee: Zenith Radio Corporation, Chicago, A pair of crossed arrays of fiber-optic light pipes have lll. their crossings in juxtaposition with the photosensitive devices, the light pipes including localized light-
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