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发明名称
Key holder and protector
摘要
申请公布号
US2253332(A)
申请公布日期
1941.08.19
申请号
US19400329585
申请日期
1940.04.13
申请人
JACKSON ROBERT E
发明人
JACKSON ROBERT E.
分类号
主分类号
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代理人
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地址
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