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Bifocal reading lens height compensator

G - Physics – 02 – C
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Bifocal soft contact lens

G - Physics – 02 – C
Patent

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Binaural hearing aid

G - Physics – 02 – C
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Binaural hearing aid system

G - Physics – 02 – C
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Binocular glasses

G - Physics – 02 – C
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Binocular lens systems

G - Physics – 02 – C
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Binocular optical apparatus in particular electronic...

G - Physics – 02 – C
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Binocular viewing device

G - Physics – 02 – C
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Binocular visual training device

G - Physics – 02 – C
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Bipolar progressive-power ophthalmic lens

G - Physics – 02 – C
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Blank for eyeglass lenses and means for selecting a suitable...

G - Physics – 02 – C
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Bone conduction audiphone

G - Physics – 02 – C
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Bone conduction receiver

G - Physics – 02 – C
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Bone conduction unit

G - Physics – 02 – C
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Bone-conduction all-in-one transistor amplifier hearing aid

G - Physics – 02 – C
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Bone-conduction hearing devices

G - Physics – 02 – C
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Bone-conduction hearing-aids

G - Physics – 02 – C
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Bridge for attaching auxiliary lenses

G - Physics – 02 – C
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Cap provided with removable flip up and down glasses

G - Physics – 02 – C
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Cardiographic apparatus with stylus control means

G - Physics – 02 – C
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