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BE432024A
(cg-RX-API-DMAC7.html)
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BE490849A
(cg-RX-API-DMAC7.html)
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US2420798A
(en)
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Apparatus for and process of taking and showing sound motion pictures
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US1925600A
(en)
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Talking picture apparatus
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BE374244A
(cg-RX-API-DMAC7.html)
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BE361230A
(cg-RX-API-DMAC7.html)
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US1552926A
(en)
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Photo-electric means for reproducing sound from graphical records
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BE417919A
(cg-RX-API-DMAC7.html)
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US2142573A
(en)
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Light valve
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BE345991A
(cg-RX-API-DMAC7.html)
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US1647353A
(en)
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Photo-electric means for reproducing sound from graphical records
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BE380046A
(cg-RX-API-DMAC7.html)
|
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BE485979A
(cg-RX-API-DMAC7.html)
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BE389375A
(cg-RX-API-DMAC7.html)
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BE395791A
(cg-RX-API-DMAC7.html)
|
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BE488194A
(cg-RX-API-DMAC7.html)
|
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BE375271A
(cg-RX-API-DMAC7.html)
|
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BE371364A
(cg-RX-API-DMAC7.html)
|
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BE369144A
(cg-RX-API-DMAC7.html)
|
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BE361444A
(cg-RX-API-DMAC7.html)
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BE392448A
(cg-RX-API-DMAC7.html)
|
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BE475261A
(cg-RX-API-DMAC7.html)
|
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BE395790A
(cg-RX-API-DMAC7.html)
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BE395203A
(cg-RX-API-DMAC7.html)
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CH193674A
(fr)
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Procédé pour l'enregistrement d'oscillations.
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