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发明名称
Циркуль для рельефного черчения дуг окружностей, преимущественно слепыми
摘要
申请公布号
SU55157(A1)
申请公布日期
1938.11.30
申请号
SU19350005007
申请日期
1935.11.26
申请人
SHMIDOV G.R.
发明人
SHMIDOV G.R.
分类号
B43L9/02;G09B21/00
主分类号
B43L9/02
代理机构
代理人
主权项
地址
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