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DE759396C
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Synthetic resin compound
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DE580891C
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Lathe machine for the rollers of speaking machines
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DE593021C
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Talking machine
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DE563735C
|
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Elevator device for spring drives, especially for speaking machines
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DE609691C
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Automatic parking device for speaking machines
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ES116744A1
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A ball bearing system, especially for the sound arm of talking machines.
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ES116600A1
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A device for the connection and disconnection of dictation machines and similar devices.
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ES114786A1
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A diaphragm for talking machines and similar devices.
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ES114689A1
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A diaphragm for talking machines and similar.
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DE541790C
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On and off switch for dictation machines
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DE549357C
|
|
On and off device for speaking machines
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ES110248A1
|
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A device to adjust the speed applicable to the driving mechanisms of talking machines, especially those of discs.
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ES109906A1
|
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A device for winding the mechanisms of transmission by spring, especially for the mechanisms of drive of the talking machines.
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DE493819C
|
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Exposure arrangement for electro-acoustic apparatus, e.g. B. electrically operated speaking machines
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DE553994C
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Switch-on and switch-off device for sound recording and reproducing devices
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DE469402C
|
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Sound line for sound reproduction devices, speaking machines or the like.
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DE442897C
|
|
On and off device for drives of speaking machines
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|
DE414820C
|
|
Stop device for engines of speech machines
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DE431318C
|
|
Spring drive, especially for speaking machines
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DE445024C
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Sound box
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