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发明名称
Pencil pointer
摘要
申请公布号
US1896253(A)
申请公布日期
1933.02.07
申请号
US19320614023
申请日期
1932.05.27
申请人
GABRIEL MASSENA;ALFRED V. DU PONT
发明人
SMITH CLARENCE A.
分类号
B43L23/00
主分类号
B43L23/00
代理机构
代理人
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