Electric discharge vessel with metallic vessel bulb
DE706900C
Ceramic sealing body for electrical discharge vessels, especially for small electron tubes
DE724031C
Discharge vessel, in particular small electron tubes, which has a ceramic, glass-coated closing body, and method for its production
DE905175C
Electrical discharge vessel, especially small electron tubes with metal pistons, and process for their manufacture
DE763345C
Electrical discharge vessel
DE735370C
Discharge vessel, in particular small electron tubes, in which the pump tube is melted into a bore of a piston that is difficult to soften and corresponds to the outer diameter of the pump tube
DE735842C
Process for the manufacture of electric discharge tubes
DE721801C
Getter arrangement for electron tubes
DE694204C
High frequency amplifier circuit with matched input and output circuit
DE720978C
Station setting device
DE674523C
Multi-electrode tubes with two or more cathodes
DE516892C
Device to improve the evenness or increase the volume for train telephony
DE515471C
Device for message transmission from, to and between moving railroad trains
DE487384C
Method for the transmission of wireless messages from and to trains in motion
DE591798C
Device for the transmission of messages from and to the moving train
DE492768C
Device for venting electric light bulbs or other vacuum vessels
DE470595C
Installation on vehicles equipped with wired telegraphy or telephony
DE590955C
Arrangement of the conductive lattice girders of the control electrode of a multi-electrode tube with a box-shaped anode of square cross-section
DE534895C
Procedure for removing the residual gases from discharge vessels with two or more electrodes
