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摘要
申请公布号
US1935173(A)
申请公布日期
1933.11.14
申请号
US19310532239
申请日期
1931.04.23
申请人
ANTHONY DEVELOPMENT COMPANY
发明人
ANTHONY WILLIAM C.;WACHTER LESTER
分类号
B21D5/04
主分类号
B21D5/04
代理机构
代理人
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