U.S. federal trademark · Serial No. 79051969 · Reg. No. 3606214
AUDIO SYSTEMS AND MULTI-ROOM AUDIO SYSTEMS COMPRISING AN APPARATUS FOR RECORDING, TRANSMITTING AND REPRODUCING SOUND AND AUDIO VISUAL SIGNALS BY ANALOGUE OR DIGITAL MEANS, POWER MODULES, VOLUME CONTROLS, KEYPADS, HUBS, INTERCOMS AND POWER SUPPLIES
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