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Perfectionnement à la fabrication des tubes à décharge

申请公布号:FR952549(A)

申请号:FRD952549

申请日期:1947.08.28

申请公布日期:1949.11.18

申请人:
COMPAGNIE FRANCAISE THOMSON-HOUSTON

分类号:H01J21/36

主分类号:H01J21/36

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