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US2280763A
(en)
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Phonographic apparatus
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BE363396A
(cs)
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US2174156A
(en)
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Phonographic apparatus
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US1835073A
(en)
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Phonograph pick-up device
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US908625A
(en)
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Sound-box.
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US2586362A
(en)
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Dual point phonograph pickup stylus
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US1695418A
(en)
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Resilient mounting for the stylus holder of talking machines
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US1158401A
(en)
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Talking-machine.
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US2819088A
(en)
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Tone arm constructions for phonographs
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US3450410A
(en)
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Mechanical sound system for phonograph record player
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CN208521602U
(zh)
|
|
一种唱片机结构
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US3722893A
(en)
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Pickup of disk reproducer
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US2771515A
(en)
|
|
Electromechanical transducers
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US1334601A
(en)
|
|
Tone-modifier for talking-machines
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BE333831A
(cs)
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|
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US1394176A
(en)
|
|
Damper for talking-machines
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US1215410A
(en)
|
|
Phonograph.
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US1439718A
(en)
|
|
Phonograph
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US653654A
(en)
|
|
Device for reproducing sounds.
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US706627A
(en)
|
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Attachment for phonographs.
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US1393106A
(en)
|
|
Sound-reproducer for phonographs
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US2386089A
(en)
|
|
Phonograph pickup device
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US1271527A
(en)
|
|
Sound-regenerating machine.
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US1395195A
(en)
|
|
Tone-modifier for sound-boxes
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US890754A
(en)
|
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Regulating device for graphophone sound-boxes.
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