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发明名称
Chaplet
摘要
申请公布号
US2176179(A)
申请公布日期
1939.10.17
申请号
US19390251791
申请日期
1939.01.19
申请人
THE F. HOHLFELDER COMPANY
发明人
HOHLFELDER HARVEY F.
分类号
B22C21/14
主分类号
B22C21/14
代理机构
代理人
主权项
地址
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