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发明名称
Improvements in or relating to manifold writing devices
摘要
申请公布号
GB431036(A)
申请公布日期
1935.06.28
申请号
GB19350002784
申请日期
1935.01.28
申请人
HORACE DRUMMOND BLACK;CHRISTOPHER FREDERICK WEBB
发明人
分类号
B41L5/04
主分类号
B41L5/04
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