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发明名称
Capteur de poussières pour marteau perforateur à air comprimé
摘要
申请公布号
FR734847(A)
申请公布日期
1932.10.28
申请号
FRD734847
申请日期
1932.04.07
申请人
COMMISSION DES ARDOISIERES D'ANGERS
发明人
分类号
E21B21/00
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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