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发明名称
Прибор для вычерчивания эллипсов
摘要
申请公布号
SU32160(A1)
申请公布日期
1933.09.30
申请号
SU19320106355
申请日期
1932.03.30
申请人
AFANASEV N.V.
发明人
AFANASEV N.V.
分类号
B43L11/04
主分类号
B43L11/04
代理机构
代理人
主权项
地址
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