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发明名称
ELECTRIC VALVE CONVERTING APPARATUS
摘要
申请公布号
CA344216(A)
申请公布日期
1934.08.28
申请号
CAD344216
申请日期
申请人
THE CANADIAN GENERAL ELECTRIC COMPANY
发明人
CLODIUS H. WILLIS
分类号
主分类号
代理机构
代理人
主权项
地址
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