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发明名称
Improved processes for producing light weight stones
摘要
申请公布号
GB480681(A)
申请公布日期
1938.02.25
申请号
GB19360020610
申请日期
1936.07.25
申请人
KARL IVAR ANDERS EKLUND
发明人
分类号
C04B28/18
主分类号
C04B28/18
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代理人
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