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发明名称
Process for making lightweight aggregates using fragile nodules
摘要
申请公布号
US2544752(A)
申请公布日期
1951.03.13
申请号
US19490098186
申请日期
1949.06.10
申请人
GELBMAN LAWRENCE F
发明人
GELBMAN LAWRENCE F.
分类号
B28C7/00
主分类号
B28C7/00
代理机构
代理人
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地址
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