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Click the  icon to view the hierarchy. |
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photophones (sound devices (equipment), Sound Devices (hierarchy name), Furnishings and Equipment (hierarchy name)) |
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Note: Instruments for transmitting sound by means of light, especially those invented by Alexander Graham Bell and Sumner Tainter in 1880.
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| Terms: |
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| photophones (preferred,C,U,English-P,D,U,U)
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| photophone (C,U,English,AD,U,SN)
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| photophone (French-P,AD,U,MSN)
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Facet/Hierarchy Code: V.TT |
Hierarchical Position:
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Objects Facet |
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.... Furnishings and Equipment (hierarchy name) (G) |
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........ Sound Devices (hierarchy name) (G) |
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............ sound devices (equipment) (G) |
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................ photophones (G,U) |
Sources and Contributors: |
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