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公开(公告)号：US1391328A
公开(公告)日：1921-09-20
申请号：US36929220
申请日：1920-03-27
Applicant: WILLIAM LEACH
Inventor： WILLIAM LEACH
IPC: B61L3/04
CPC classification number: B61L3/04 , Y10T137/1632 , Y10T137/1684 , Y10T137/6866 , Y10T137/6869
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