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US3093709A
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Apparatus for printing magnetic sound record provided with a device for the inspection of the intensity of printed magnetic sound record
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US3023010A
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Means for protecting a magnetic sound record sheet from stray magnetic field
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US3026381A
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Mechanism for enabling a magnetic recorder to be used with a magnetic record sheet shorter than standard size
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US2973410A
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Pressing plate of a magnetic sound record reading machine
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US3031533A
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Apparatus for recording and reproducing sound continuously for a long time adapted to be attached on a magnetic sound record reading machine
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US2986609A
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Apparatus of synchronous recording on a number of magnetic recording sheets
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US3061085A
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Pack for magnetic sound record sheets
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US2999907A
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System for manufacturing at high speed magnetic sound record sheets used on a magnetic sound record reading machine
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US2962559A
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Means for compensating a record for changes in atmospheric conditions
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US3022079A
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Transferable coating magnetic film for producing magnetic recording sheets
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US2929633A
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Mechanism for driving the head-supporting body in the magnetic sound recording and reading machine
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US2926018A
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Apparatus for extending a magnetic sound record sheet on a magnetic sound record reading machine
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US3045814A
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Packaging of a magnetic head assembly
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US2962558A
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Apparatus for supporting a magnetic sound recording and reproducing head in a magnetic sound record reading machine
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US2940763A
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Method for setting a magnetic sound record sheet on a magnetic sound record reading machine and an apparatus therefor
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