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公开(公告)号：US1809991A
公开(公告)日：1931-06-16
申请号：US40207929
申请日：1929-10-24
Applicant: STEVENS EDWARD R , NICOLAI ARTHUR F
Inventor： STEVENS EDWARD R , NICOLAI ARTHUR F
IPC: B05C3/09
CPC classification number: B05C3/09
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