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发明名称
Frequency stabilizing means
摘要
申请公布号
US1986599(A)
申请公布日期
1935.01.01
申请号
US19330700855
申请日期
1933.12.04
申请人
PRATT READ & COMPANY
发明人
O'LEARY FRANCIS R.
分类号
G10H5/10
主分类号
G10H5/10
代理机构
代理人
主权项
地址
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