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发明名称
Wave signaling system
摘要
申请公布号
US2129740(A)
申请公布日期
1938.09.13
申请号
US19360101021
申请日期
1936.09.16
申请人
HAZELTINE CORPORATION
发明人
LEWIS HAROLD M.
分类号
H04J1/00
主分类号
H04J1/00
代理机构
代理人
主权项
地址
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