DEVICE WITH ABRUPT METAL-INSULATOR JUCTION WITH PARALLEL CONDUCTING LAYERS von KANG KVANG-JONG, LI JONG-VUK, JUN SUN-DZIN, KIM BONG-DZUN, CHAE BIUNG-GIU, KIM KHIUN-TAK

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VACUUM CLEANER (OPTION) von CHOO DZONG SU, KIM DZAE KIUM, KHVANG MAN TAE, KO MOO KHIUN, JOO MIUNG SIG, KHIUN KIE TAK, JANG KHAE SEOK, DZEONG KHOI KIL

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VACUUM CLEANER (VERSIONS) von CHOO DZONG SU, KIM IL DZOONG, SON JOUNG BOK, SHIN DZIN KHIOJUK, DZEONG KIEONG SEON, LI SUNG KHVA, PARK MIN, KO MOO KHIUN, JOO MIUNG SIG, KHIUN KIE TAK, JANG KHAE SEOK

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DEVICE FOR DUST SEPARATION OF VACUUM CLEANER von LI CHANG-KHOON, CHO SEONG-KOO, DZI KHEON-PIEONG, JUN CHANG-KHO, DZEONG KIEONG-SEON, KIM DZIN-JOUNG, KHA GUN-KHO, KHIUN KIE-TAK, KHVANG GEUN-BAE, SHIN DZIN-KHIOUK, SEO DZIN-VOOK

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VACUUM CLEANER DUST SEPARATION DEVICE von SHIN KHIOURL, LI CHANG-KHOON, DZEONG KIEONG-SEON, KO MOO-KHIUN, SEO DZIN-VOOK, DZEONG KHOI-KIL, KHVANG MAN-TAE, CHO SEONG-KOO, DZI KHEON-PIEONG, KIM JANG-KHO, KHIUN KIE-TAK, KHVANG GEUN-BAE, SHIN DZIN-KHIOUK, JANG KHAE-SEOK

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DEVICE TO SEPARATE DUST FOR VACUUM CLEANER (VERSIONS) von SHIN KHIOURL, LI CHANG-KHOON, KIM JOUNG-KHO, DZEONG KIEONG-SEON, SEO DZIN-VOOK, KO MOO-KHIUN, DZEONG KHOI-KIL, KHVANG MAN-TAE, CHO SEONG-KOO, DZI KHEON-PIEONG, KHIUN KIE-TAK, KHVANG GEUN-BAE, SHIN DZIN-KHIOUK, JANG KHAE-SEOK

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