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发明名称
WRITING INSTRUMENT
摘要
申请公布号
CA769343(A)
申请公布日期
1967.10.17
申请号
CAD769343
申请日期
申请人
DAVID KAHN
发明人
MORRIS D. LEVY
分类号
主分类号
代理机构
代理人
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地址
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