U.S. federal trademark · Serial No. 76441907 · Reg. No. 1018091
MEGAPHONES, EARPHONES, CABINETS FOR LOUDSPEAKERS, [ VIDEO PLAYERS, ] LOUDSPEAKERS, [ TELEPHONES, ELECTRIC SOCKETS, ELECTRIC PLUGS, GALVANIC CELLS, ] SPEAKING-TUBES, [ BATTERY CHARGERS AND ] TIME-DELAY REVERBERATION UNITS
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