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公开(公告)号：US1985517A
公开(公告)日：1934-12-25
申请号：US70026033
申请日：1933-11-29
Applicant: EMBURY MFG CO
Inventor： PERKINS ALFRED J , BECKMAN FRANK J
CPC classification number: F21L19/006 , F21V37/00
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