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发明名称
Pencil
摘要
申请公布号
US2116136(A)
申请公布日期
1938.05.03
申请号
US19360095816
申请日期
1936.08.13
申请人
BROWN & BEIGELOW
发明人
BEISANG ALFRED O.
分类号
B43K21/08
主分类号
B43K21/08
代理机构
代理人
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