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Seiko Tsukamoto
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Electrostatic and magnetic tobacco smoke filtering arrangement
Patent number
4,258,730
Issue date
Mar 31, 1981
Seiko Tsukamoto
Kenkichi Tsukamoto
C05 - FERTILISERS MANUFACTURE THEREOF
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last 30 patents
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