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发明名称
Tamperproof recorder
摘要
申请公布号
US2616778(A)
申请公布日期
1952.11.04
申请号
US19480051094
申请日期
1948.09.24
申请人
THE SERVICE RECORDER COMPANY
发明人
COOL KENNETH A.;SLATES RALPH W.
分类号
G07C3/06
主分类号
G07C3/06
代理机构
代理人
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地址
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