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发明名称
EMISSION VALVE MODULATION SYSTEM
摘要
申请公布号
CA404449(A)
申请公布日期
1942.04.28
申请号
CAD404449
申请日期
申请人
HAZELTINE CORPORATION
发明人
HAROLD A. WHEELER
分类号
主分类号
代理机构
代理人
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