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发明名称
Process for producing winding keys
摘要
申请公布号
US1823547(A)
申请公布日期
1931.09.15
申请号
US19280314156
申请日期
1928.10.22
申请人
WESTERN CLOCK COMPANY
发明人
KAEFER MARTIN HERMANN
分类号
B21D53/24
主分类号
B21D53/24
代理机构
代理人
主权项
地址
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