U.S. federal trademark · Serial No. 71625645 · Reg. No. 0569290
ELECTRICAL SOUND RECORDING AND REPRODUCING SYSTEMS AND APPARATUS-NAMELY, ELECTRICAL PUBLIC ADDRESS SYSTEMS, ALSO ELECTRICAL IN AND OUT REGISTERS, THE LATTER BEING REGISTERS USED IN THE LOBBIES OF OFFICE BUILDINGS WHICH SERVE TO VISUALLY SHOW WHETHER THE OCCUPANTS OF OFFICES IN SUCH BUILDINGS ARE IN OR OUT OF THEIR RESPECTIVE OFFICES
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