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公开(公告)号：US1531196A
公开(公告)日：1925-03-24
申请号：US72876424
申请日：1924-07-28
Applicant: OZON TECHNIK AG
Inventor： JOHANNES KUHLENSCHMIDT
IPC: C01B13/11
CPC classification number: C01B13/11 , C01B2201/14 , C01B2201/24
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