Projection engineering (Sept 1929-Nov 1930)

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Hare YOU Overcome This Obstacle? Between the amplifier and loud speaker lies the source of considerable difficulty in attaining perfect reproduction of sound and talking pictures. Our engineers, — thoroughly experienced in such a highly specialized field, — have been particularly successful in eliminating this trouble. If YOU have yet to overcome this obstacle, consult — AmerTr^n TRADE MARK REG.U.S.PAT.OFF^» ^b» AMERICAN TRANSFORMER COMPANY Transformer builders for more than 28 Years 1 78 Emmet Street Newark, New Jersey