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发明名称
Drafting instrument
摘要
申请公布号
US1858343(A)
申请公布日期
1932.05.17
申请号
US19310515623
申请日期
1931.02.13
申请人
SALTNASS ARLE M
发明人
SALTNASS ARLE M.
分类号
B43K3/00
主分类号
B43K3/00
代理机构
代理人
主权项
地址
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