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发明名称
Electric signal code generator
摘要
申请公布号
US3385943(A)
申请公布日期
1968.05.28
申请号
US19670635562
申请日期
1967.05.02
申请人
EVERETT A. WESTPHAL
发明人
WESTPHAL EVERETT A.
分类号
G08B25/04;H01H19/58;H04M1/274
主分类号
G08B25/04
代理机构
代理人
主权项
地址
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