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发明名称
Chuck
摘要
申请公布号
US1807385(A)
申请公布日期
1931.05.26
申请号
US19290335132
申请日期
1929.01.25
申请人
CHURCH ALBERT E
发明人
CHURCH ALBERT E.
分类号
B23B31/28
主分类号
B23B31/28
代理机构
代理人
主权项
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