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发明名称
ULTRA SHORT WAVE ELECTRON TUBES
摘要
申请公布号
CA472984(A)
申请公布日期
1951.04.17
申请号
CAD472984
申请日期
申请人
"PATELHOLD" PATENTVERWERTUNGS- AND ELEKTRO-HOLDING A.-G.
发明人
FRITZ LUDI
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主分类号
代理机构
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