- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 31/40 - Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having grid-like image screen through which the electron ray passes and by which the ray is influenced before striking the output electrode, i.e. having "triode action"
Patent holdings for IPC class H01J 31/40
Total number of patents in this class: 0
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Principal owners for this class
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