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发明名称
FAIL-SAFE ELECTRICAL SYSTEM
摘要
申请公布号
CA559519(A)
申请公布日期
1958.07.01
申请号
CAD559519
申请日期
申请人
WILLIAM G. ROWELL
发明人
WILLIAM G. ROWELL
分类号
主分类号
代理机构
代理人
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