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发明名称
摘要
申请公布号
FR1590882(A)
申请公布日期
1970.04.20
申请号
FRD1590882
申请日期
1968.11.05
申请人
发明人
分类号
F04B1/20;F04B1/22
主分类号
F04B1/20
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