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ES130386A1
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New closure system for tubes, bottles, bottles and similar containers.
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GB397022A
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Interchangeable closure for collapsible tubes, tins or the like
|
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GB375708A
|
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Improvements in or relating to armatures for electric pickups, with screwless needleholder
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GB362836A
|
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Improvements in or relating to electromagnetic pickups
|
|
GB376872A
|
|
Improvements in or relating to electromagnetic units for use in loud-speakers, gramophone pick-ups and the like
|
|
ES120257A1
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A loudspeaker for large surfaces with a visibly arranged exposed membrane whose actuation is carried out in the direction of the circle of its curves.
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GB311461A
|
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Diaphragm for sound reproduction
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GB288386A
|
|
Improvements in sound producing and reproducing devices
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GB145784A
|
|
Improvements in electric switches
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