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发明名称
Harmonic-frequency timing system
摘要
申请公布号
US1955316(A)
申请公布日期
1934.04.17
申请号
US19320632512
申请日期
1932.09.10
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
WENSLEY ROY J.
分类号
H04M11/00
主分类号
H04M11/00
代理机构
代理人
主权项
地址
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