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发明名称
Improvements in the automatic control of glow discharge tubes in recording sound on film
摘要
申请公布号
GB381953(A)
申请公布日期
1932.10.03
申请号
GB19310019247
申请日期
1931.07.03
申请人
WILLIAM ARNOLD CHAMBERS;FREDERICK JOHN GOODHALL COX
发明人
分类号
G11B7/00
主分类号
G11B7/00
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