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BE399600A
(enFirst)
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BE485979A
(enFirst)
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US1734248A
(en)
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Photophonographic apparatus and method
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BE345991A
(enFirst)
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US1942066A
(en)
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Means and method for recording and reproducing photographic sound records
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BE432024A
(enFirst)
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US1580762A
(en)
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Reproduction of speaking films
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US1946589A
(en)
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Method and apparatus for recording and reproducing photographic sound records
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US2258993A
(en)
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Sound recording apparatus
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BE343938A
(enFirst)
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US1929119A
(en)
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Sound reproducing apparatus
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BE381578A
(enFirst)
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SU23638A1
(ru)
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Устройство дл записи и воспроизведени звука на кинематографическом фильме
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Standley
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Sweden talks: Early sound film restoration projects |
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BE488194A
(enFirst)
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BE471346A
(enFirst)
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BE387337A
(enFirst)
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GB444015A
(en)
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Improvements in or relating to methods of and apparatus for photographically recording sound waves
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BE490849A
(enFirst)
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CH130173A
(fr)
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Procédé d'obtention d'un film sur lequel sont enregistrés des images et des sons.
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BE458371A
(enFirst)
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BE392448A
(enFirst)
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CH234384A
(fr)
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Procédé et appareil pour l'enregistrement de sons sur un support et support muni d'un enregistrement ainsi obtenu.
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BE624839A
(enFirst)
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BE480257A
(enFirst)
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