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US1013331A
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Device for controlling the synchronism of two motors.
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US989207A
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Device for controlling the operation of two reproducing apparatus.
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GB190916941A
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Improvements in Devices for Controlling the Operation of Two or more Reproducing Apparatus.
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CA122480A
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Synchronizing apparatus for phonographs and cinematographs
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US941211A
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Apparatus for producing audible moving pictures, pieces of music, and other performances.
|
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GB190904899A
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A Device for Effecting the Synchronous Working of Two Machines.
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US1063085A
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Means for recording and reproducing lengthy speeches, compositions, and the like.
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GB190622888A
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Method of and Means for Recording and Reproducing Speeches, Music and the like by the aid Phonographic Instruments
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US1049171A
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Means for controlling the time of starting phonographs and the like.
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GB189413138A
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Improvements in Bearings.
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CA48132A
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Bearing
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