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GB1080132A
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Improvements in or relating to magnetic switching arrangements
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GB786891A
|
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Improvements in or relating to magnetic records
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GB820201A
|
|
Improvements in or relating to multi-channel magnetic recording and/or reproducing heads
|
|
GB785441A
|
|
Improvements in or relating to multi-channel magnetic recording and reproducing apparatus
|
|
GB759486A
|
|
Improvements in or relating to magnetic recording media
|
|
GB742645A
|
|
Improvements in or relating to the manufacture of a magnetic recording medium
|
|
GB695150A
|
|
Improvements in or relating to electromagnetic transducing apparatus
|
|
GB697239A
|
|
Improvements in or relating to gramophone pick-ups and recording heads
|
|
GB692446A
|
|
Improvements in or relating to gramophone pick-ups and recording heads
|
|
GB692447A
|
|
Improvements in or relating to gramophone pick-ups and recording heads
|
|
GB687956A
|
|
Improvements in or relating to tape driving mechanism of a magnetic recording and reproducing apparatus
|
|
GB687287A
|
|
Improvements in or relating to magnetic recording and reproducing apparatus
|
|
GB700906A
|
|
Improvements in or relating to magnetic reproducing apparatus
|
|
GB689101A
|
|
Improvements in or relating to electromagnetic transducers
|
|
GB687851A
|
|
Improvements in or relating to electromagnetic transducing apparatus
|
|
GB687927A
|
|
Improvements in or relating to recor ding or reproducing apparatus
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|
GB655106A
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Improvements in or relating to sound recording apparatus
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