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发明名称
Drafting pen
摘要
申请公布号
US2842100(A)
申请公布日期
1958.07.08
申请号
US19570678112
申请日期
1957.08.14
申请人
BURTES HODGES CLARENCE
发明人
HODGES CLARENCE BURTES
分类号
B43K17/02
主分类号
B43K17/02
代理机构
代理人
主权项
地址
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