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Application filed by Hans Vogt, Josef Dr Engl, Joseph MassollefiledCriticalHans Vogt
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Publication of AT94697BpublicationCriticalpatent/AT94697B/en
Soundproofing, Sound Blocking, And Sound Damping
(AREA)
Power Conversion In General
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Description
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Einrichtung zur Steuerung elektrischer Ströme durch Schallkräfte.
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Device for controlling electrical currents by sound forces.
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Claims (1)
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AT94697D1921-04-131921-04-13
Device for controlling electrical currents by sound forces.
AT94697B
(en)