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发明名称
Volume control
摘要
申请公布号
US2506491(A)
申请公布日期
1950.05.02
申请号
US19480059008
申请日期
1948.11.08
申请人
PHILLIPS PETROLEUM COMPANY
发明人
BOISBLANC DESLONDE R. DE
分类号
H01C10/20
主分类号
H01C10/20
代理机构
代理人
主权项
地址
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