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发明名称
Process for producing hollow cast blocks
摘要
申请公布号
US2209519(A)
申请公布日期
1940.07.30
申请号
US19390258472
申请日期
1939.02.25
申请人
DEUTSCHE ROHRENWERKE AKTIENGESELLSCHAFT
发明人
HALBROCK FRITZ;BAUMGARDT WILHELM
分类号
B22D7/04
主分类号
B22D7/04
代理机构
代理人
主权项
地址
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