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发明名称
Improvements relating to gear wheels having bronze teeth and steel hub
摘要
申请公布号
GB440786(A)
申请公布日期
1936.01.06
申请号
GB19350018268
申请日期
1935.06.26
申请人
PAUL DURAND
发明人
分类号
B22D19/00
主分类号
B22D19/00
代理机构
代理人
主权项
地址
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