Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel

Child Classifications

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• H01J 65/04 Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating +1 CPC IPC+CPC Available in IPC and CPC
• H01J 65/06 Lamps in which a gas filling is excited to luminesce by radioactive material structurally associated with the lamp, e.g. inside the vessel IPC+CPC Available in IPC and CPC
• H01J 65/08 Lamps in which a screen or coating is excited to luminesce by radioactive material located inside the vessel IPC+CPC Available in IPC and CPC