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发明名称
Draft key retainer
摘要
申请公布号
US2638809(A)
申请公布日期
1953.05.19
申请号
US19490103675
申请日期
1949.07.08
申请人
THE SYMINGTON-GOULD CORPORATION
发明人
BLATTNER EMIL H.
分类号
F16B3/00;F16B21/12
主分类号
F16B3/00
代理机构
代理人
主权项
地址
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