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发明名称
PROPELLING PENCIL
摘要
申请公布号
CA326662(A)
申请公布日期
1932.10.11
申请号
CAD326662
申请日期
申请人
HORACE HUGH HUDSON
发明人
HORACE HUGH HUDSON
分类号
主分类号
代理机构
代理人
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