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发明名称
Method of key bitting
摘要
申请公布号
US2754701(A)
申请公布日期
1956.07.17
申请号
US19540463408
申请日期
1954.10.20
申请人
SWANSON GUNNAR E
发明人
SWANSON GUNNAR E.
分类号
B23C3/35
主分类号
B23C3/35
代理机构
代理人
主权项
地址
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