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发明名称
Perfectionnement à la fabrication des tuyaux à base de ciment
摘要
申请公布号
FR714253(A)
申请公布日期
1931.11.10
申请号
FRD714253
申请日期
1930.07.03
申请人
发明人
MOUTARD EDMOND-MARTIAL
分类号
B28B21/90
主分类号
B28B21/90
代理机构
代理人
主权项
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