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发明名称
Keyway checkers
摘要
申请公布号
US2807091(A)
申请公布日期
1957.09.24
申请号
US19540445510
申请日期
1954.07.26
申请人
MICHELSON FRED E
发明人
MICHELSON FRED E.
分类号
G01B5/00
主分类号
G01B5/00
代理机构
代理人
主权项
地址
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