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发明名称
APPARATUS INVOLVING THE ELECTRICAL MEASUREMENT OF AN ELAPSED TIME INTERVAL
摘要
申请公布号
CA452705(A)
申请公布日期
1948.11.16
申请号
CAD452705
申请日期
申请人
SIEMENS BROTHERS AND CO. LIMITED
发明人
DAVID ADAM CHRISTIAN
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主分类号
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代理人
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