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经营范围
发明名称
Appui-main pour faciliter l'écriture au bas des pages de livres combiné avec une réglette et agencé de façon à pouvoir être employé comme masqueur de chiffres.
摘要
申请公布号
CH193648(A)
申请公布日期
1937.10.31
申请号
CHD193648
申请日期
1936.12.30
申请人
KOELLMANN-CAMPICHE,ERNEST W.
发明人
W. KOELLMANN-CAMPICHE,ERNEST
分类号
B43L15/00
主分类号
B43L15/00
代理机构
代理人
主权项
地址
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