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经营范围
发明名称
Drafting apparatus
摘要
申请公布号
US2137004(A)
申请公布日期
1938.11.15
申请号
US19370123255
申请日期
1937.01.30
申请人
EUGENE DIETZGEN CO.
发明人
LANGSNER ADOLPH
分类号
B43L13/06
主分类号
B43L13/06
代理机构
代理人
主权项
地址
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