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经营范围
发明名称
Perfectionnements apportés aux procédés pour la production de cailloux artificiels, aux cailloux artificiels ainsi obtenus et aux matériaux élaborés à l'aide de tels cailloux
摘要
申请公布号
BE619922(A1)
申请公布日期
1962.11.05
申请号
BE19620619922
申请日期
1962.07.09
申请人
WILLOUGHBY ARTHUR SMITH
发明人
WILLOUGHBY ARTHUR SMITH
分类号
(IPC1-7):C04B
主分类号
(IPC1-7):C04B
代理机构
代理人
主权项
地址
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