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BE432024A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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US2131293A
(en)
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Sound recording
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US1925600A
(en)
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Talking picture apparatus
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BE395711A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE374244A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE361230A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.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
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE345991A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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CH232915A
(fr)
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Dispositif d'étalonnage automatique pour tireuse cinématographique.
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US1647353A
(en)
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Photo-electric means for reproducing sound from graphical records
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BE380046A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE485979A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE389375A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE395791A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE488194A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE371364A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE392448A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE475261A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE395790A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE395203A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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CH193674A
(fr)
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Procédé pour l'enregistrement d'oscillations.
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BE353512A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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BE562539A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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Nordmann
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REVUE SCIENTIFIQUE: LA PAROLE FILMÉE |