The Edison phonometer - device by means of which a mechanical work is obtained by speech in 'Nature' 1878(The Edison phonometer - device by means of which a mechanical work is obtained by speech in “” Nature”” 1878.)Unknown artist |
€ 130.79
Enthält 13.5% MwSt.
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Undated · drawing
· Picture ID: 990891
Private Collection / Bridgeman Images |
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