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发明名称
Perfectionnements aux lignes interdigitales symétriques utilisables comme circuits à retard dans les tubes à ondes progressives
摘要
申请公布号
FR1042930(A)
申请公布日期
1953.11.04
申请号
FRD1042930
申请日期
1951.04.28
申请人
COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL
发明人
分类号
H01J23/28
主分类号
H01J23/28
代理机构
代理人
主权项
地址
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Coolant delivery hose useful in air conditioner and transport machines, comprises an inner layer formed with throughholes, a polyvinyl alcohol layer with low permeability and a rubber layer
