Display signs comprising a flat panel loudspeaker

Details Display signs comprising a flat panel loudspeaker Display signs comprising a flat panel loudspeaker

2005-10-18

2005-10-18

Hofsass, Jeffery (Department: 2636)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S815400, C340S691100, C340S384100, C446S227000

Reexamination Certificate

active

06956492

ABSTRACT:
A display sign is in the form of a flat panel loudspeaker, the graphics of the display being carried on one exposed surface of the flat panel, the latter being provided with one or more transducers such that the flat panel may be energized to transmit sound in accordance with signals supplied to the one or more transducers. The sign may also be provided with an arrangement for storing inputs made by a user for later retrieval.

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