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发明名称
OPERATING MECHANISM FOR A WRITING INSTRUMENT
摘要
申请公布号
CA544625(A)
申请公布日期
1957.08.06
申请号
CAD544625
申请日期
申请人
W. A. SHEAFFER PEN COMPANY
发明人
RICHARD J. MANSHEIM
分类号
主分类号
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代理人
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