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发明名称
Chain welding and chain welding machine
摘要
申请公布号
US2464875(A)
申请公布日期
1949.03.22
申请号
US19470736170
申请日期
1947.03.21
申请人
SWIFT ELECTRIC WELDER COMPANY
发明人
LEWIS ALFRED H.;SHEREN KEITH
分类号
B21L3/02
主分类号
B21L3/02
代理机构
代理人
主权项
地址
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