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发明名称
File record signalling device
摘要
申请公布号
US2895448(A)
申请公布日期
1959.07.21
申请号
US19550483489
申请日期
1955.01.24
申请人
HAINES THERON L
发明人
HAINES THERON L.
分类号
B42F21/10
主分类号
B42F21/10
代理机构
代理人
主权项
地址
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