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经营范围
发明名称
Perfectionnements aux chambres claires
摘要
申请公布号
FR1072844(A)
申请公布日期
1954.09.16
申请号
FRD1072844
申请日期
1953.03.10
申请人
发明人
BERVILLE PIERRE SIFFLET DE
分类号
B43L13/18
主分类号
B43L13/18
代理机构
代理人
主权项
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