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发明名称
Chuck
摘要
申请公布号
US2530318(A)
申请公布日期
1950.11.14
申请号
US19490116233
申请日期
1949.09.17
申请人
WELLS EARL J
发明人
WELLS EARL J.
分类号
B23B31/163
主分类号
B23B31/163
代理机构
代理人
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