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公开(公告)号：US1519373A
公开(公告)日：1924-12-16
申请号：US54962122
申请日：1922-04-04
Applicant: PATRICK F QUINN
Inventor： HART JAMES D
IPC: C01B13/11
CPC classification number: C01B13/11 , C01B2201/14 , C01B2201/22
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