Kód: 28109787
The writer of these pages invented, patented and successfully demonstrated in the city of Los Angeles, California, a mechanical device by which he transformed musical vibrations into "electrical" waves. These when conveyed to the ... celý popis
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The writer of these pages invented, patented and successfully demonstrated in the city of Los Angeles, California, a mechanical device by which he transformed musical vibrations into "electrical" waves. These when conveyed to the human organism were found
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