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发明名称
ELECTRIC BELL
摘要
申请公布号
CA434384(A)
申请公布日期
1946.04.23
申请号
CAD434384
申请日期
申请人
SCHWARZE ELECTRIC COMPANY
发明人
LEWIS J. STERN
分类号
主分类号
代理机构
代理人
主权项
地址
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