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Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups
(AREA)
Abstract
"PERFECTED LOUDSPEAKER", characterized by having a circular piece, drilled in its axis and with three cylindrical projections, heavy to form seating planes of the end of the reflecting horn on which it is screwed, the assembly thus formed being attached to a piece circular, by means of internal threading, or fixing by screws and imprisoning between both, the external speaker horn in the housing that in those was provided by the turning. (Machine-translation by Google Translate, not legally binding)