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发明名称
Förfaringssätt för gradering av sand, korniga, krossade och dylika ämnen samt anläggning för detta ändamål
摘要
申请公布号
FI20970(A)
申请公布日期
1946.01.10
申请号
FID20970
申请日期
1938.07.18
申请人
PARGAS KALKBERGS AB
发明人
HOFFSTROEM FRANS ARVID
分类号
(IPC1-7):B03B3/32
主分类号
(IPC1-7):B03B3/32
代理机构
代理人
主权项
地址
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