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发明名称
Telephone system
摘要
申请公布号
US2092360(A)
申请公布日期
1937.09.07
申请号
US19360083782
申请日期
1936.06.05
申请人
SCHOEPPE RICHARD H J
发明人
SCHOEPPE RICHARD H. J.
分类号
G08B5/32
主分类号
G08B5/32
代理机构
代理人
主权项
地址
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