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发明名称
Process of making brake drums
摘要
申请公布号
US1953925(A)
申请公布日期
1934.04.10
申请号
US19310519010
申请日期
1931.02.28
申请人
GENERAL MOTORS RESEARCH CORPORATION
发明人
BOEGEHOLD ALFRED L.;TOBIN CLARENCE J.
分类号
B21D53/34
主分类号
B21D53/34
代理机构
代理人
主权项
地址
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