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公开(公告)号：US1755416A
公开(公告)日：1930-04-22
申请号：US17424427
申请日：1927-03-10
Applicant: WACHO MFG COMPANY
Inventor： WACHOWITZ WALTER J
IPC: B23K3/04
CPC classification number: B23K3/04 , B23K2201/125
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