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Vyskummy ustav chemickych claken

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  • Svit, CS
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  • Information Patent Grant

    Cigarette filter and method of manufacture
    • Patent number 4,546,040
    • Issue date Oct 8, 1985
    • Vyskummy ustav chemickych claken
    • Lubomir Knotek
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

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