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Common Detailed Techniques For Electron Tubes Or Discharge Tubes
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Abstract
Portalámparas mejorado del tipo que comprende casquillo y una base de conexión provistos de una envolvente cilíndrica unida a una tapa perforada para paso de los hilos conductores caracterizado por el hecho de que tales tapa y envolvente se hallan acopladas por medio de espigas y entalladuras angulares.