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发明名称
Improvements in or relating to mechanical return devices
摘要
申请公布号
GB526353(A)
申请公布日期
1940.09.17
申请号
GB19390008149
申请日期
1939.03.14
申请人
SOCIETE DE MECANIQUE GENERALE
发明人
分类号
B64C25/20
主分类号
B64C25/20
代理机构
代理人
主权项
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