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发明名称
Art of working sheet metal
摘要
申请公布号
US2059292(A)
申请公布日期
1936.11.03
申请号
US19330665887
申请日期
1933.04.13
申请人
GEORGE D. ELLIS AND SONS, INCORPORATED
发明人
TAYLOR WILLIAM T.
分类号
B21D13/04
主分类号
B21D13/04
代理机构
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