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发明名称
Способ изготовления поверхностей для стираемых карандашных надписей
摘要
申请公布号
SU21725(A1)
申请公布日期
1931.07.31
申请号
SU19300067783
申请日期
1930.04.06
申请人
YUZEFAT I.A.
发明人
YUZEFAT I.A.
分类号
B43L1/02
主分类号
B43L1/02
代理机构
代理人
主权项
地址
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