Yugenkaisha Kubo Technical Office

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5728288 Apparatus and method for producing air containing minus alkali ionExpiredAug 30, 95Mar 17, 98[C02F]
5569388 Method of controlling the growth of microorganism in a liquid with tourmaline crystalsExpiredJun 06, 95Oct 29, 96[C02F]

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