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经营范围
发明名称
Double point drafting device
摘要
申请公布号
US2394452(A)
申请公布日期
1946.02.05
申请号
US19440560152
申请日期
1944.10.24
申请人
HOWARD CHARLES R
发明人
HOWARD CHARLES R.
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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