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发明名称
Устройство для автоматического поддержания колебательного движения часовой системы баланс - спираль
摘要
申请公布号
SU97312(A1)
申请公布日期
1953.11.30
申请号
SU19500438896
申请日期
1950.11.25
申请人
BELYAEV V.N.
发明人
BELYAEV V.N.
分类号
G04D7/12;H03K5/153
主分类号
G04D7/12
代理机构
代理人
主权项
地址
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