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公开(公告)号：US2639822A
公开(公告)日：1953-05-26
申请号：US8908649
申请日：1949-04-22
Applicant: SHELL DEV
Inventor： SAX HENRY V , DRESSLER HOWARD V
IPC: B05B13/02
CPC classification number: B05B13/0228
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