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发明名称
High strength shell molds
摘要
申请公布号
US2751650(A)
申请公布日期
1956.06.26
申请号
US19520321509
申请日期
1952.11.19
申请人
GENERAL MOTORS CORPORATION
发明人
FROBERGER CHARLES F.
分类号
B22C23/00
主分类号
B22C23/00
代理机构
代理人
主权项
地址
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