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发明名称
CAP FOR WRITING INSTRUMENTS
摘要
申请公布号
CA304273(A)
申请公布日期
1930.09.23
申请号
CAD304273
申请日期
申请人
THE W. A. SHEAFFER PEN CO.
发明人
WILLIAM R. CUTHBERT
分类号
主分类号
代理机构
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