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发明名称
Hob
摘要
申请公布号
US2310826(A)
申请公布日期
1943.02.09
申请号
US19390272191
申请日期
1939.05.06
申请人
ADAMS WILLIAM P
发明人
ADAMS WILLIAM P.
分类号
B23F21/16
主分类号
B23F21/16
代理机构
代理人
主权项
地址
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