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发明名称
Automatic volume control time response switching
摘要
申请公布号
US2582714(A)
申请公布日期
1952.01.15
申请号
US19490110189
申请日期
1949.08.13
申请人
STANDARD OIL DEVELOPMENT COMPANY
发明人
MEIER EDWIN H.
分类号
G01V1/24
主分类号
G01V1/24
代理机构
代理人
主权项
地址
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