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发明名称
Electro-mechanical signalling apparatus
摘要
申请公布号
US3141160(A)
申请公布日期
1964.07.14
申请号
US19620226946
申请日期
1962.09.28
申请人
HEWLETT-PACKARD COMPANY
发明人
HARTKE DEXTER C.;IDELSOHN JEROME M.
分类号
G04G9/00;H03M1/00
主分类号
G04G9/00
代理机构
代理人
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地址
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