• All sections
• H - Electricity
• H01J - Electric discharge tubes or discharge lamps
• H01J 31/54 - Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output in which the electron ray or beam is reflected by the image input screen on to the image output screen

Patent holdings for IPC class H01J 31/54

Total number of patents in this class: 2

10-year publication summary

Principal owners for this class