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  1. 1
    Antinoise insert to the external ear canal, ear, especially to reduce the effectiveness of the measurement system impulse noise

    Antinoise insert to the external ear canal, ear, especially to reduce the effectiveness of the measurement system impulse noise von GÓRSKI PAWE, M Y SKI RAFA, KOZ OWSKI EMIL

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    Patent

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  2. 2
    System of training of hearing protectors to assess their proper use

    System of training of hearing protectors to assess their proper use von GÓRSKI PAWE, KOZ OWSKI EMIL, MORZY SKI LESZEK

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    Patent

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