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公开(公告)号：US2303193A
公开(公告)日：1942-11-24
申请号：US41368341
申请日：1941-10-04
Applicant: BELL TELEPHONE LABOR INC
Inventor： DOUTON GEORGE M , PHIPPS GEORGE S , SCHUMACHER EARLE E
CPC classification number: C22C11/06 , B23K35/26 , B23K35/268
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