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发明名称
Drafting apparatus
摘要
申请公布号
US2711024(A)
申请公布日期
1955.06.21
申请号
US19530331549
申请日期
1953.01.16
申请人
SACHTLEBER RUDOLPH H
发明人
SACHTLEBER RUDOLPH H.
分类号
B43L13/14
主分类号
B43L13/14
代理机构
代理人
主权项
地址
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