Connector device for evacuating or filling a scaled enclosure
FR1532634A
Improvements to devices for protecting cathode ray tubes against implosion
FR1531474A
Improvements to devices for protecting cathode ray tubes against implosion
FR1509173A
Improvements to devices for protecting cathode ray tubes against implosion
FR1493591A
Development of hollow cathode discharge tubes
FR1479520A
Assembling the indirectly heated cathodes of the electron tubes
FR1473043A
Photoconductive cell making it possible in particular to ensure the detection of an object located in a predetermined portion of space
DE1256807B
Photocell
FR1457551A
Voltage stabilizer
FR1456047A
Electron tube
FR1447362A
Improvements to push-pull power amplifiers
FR1445731A
Absolute pressure gauge for measuring low pressures
ES312754A1
Device of compression or expansion of the dynamic of an electrical signal. (Machine-translation by Google Translate, not legally binding)
FR1440048A
Installation ensuring successive switching on or off of a whole series of lamps, a determined number of constantly different lamps being respectively always on or always off
FR1440049A
Application of the progression effect of electric lamps associated in a chain to photoconductive cells
FR1439150A
Installation ensuring automatically and cyclically the ignition of successive lamps
FR1438535A
Improvements to electron tube circuits
FR1431897A
Photorheostat
FR1430266A
Indirectly heated cathode
FR1430195A
Improvement in tubular cathodes with indirect heating
