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发明名称
Highly refractory denial mold material and method of making the same
摘要
申请公布号
US1909008(A)
申请公布日期
1933.05.16
申请号
US19320638920
申请日期
1932.10.21
申请人
AUSTENAL LABORATORIES, INC.
发明人
PRANGE CHARLES H.
分类号
B22C1/20
主分类号
B22C1/20
代理机构
代理人
主权项
地址
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