4. Electric lamp and discharge devices
  5. Electrode and shield structures
  6. Filament or resistance heated electrodes
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Direct-heated cathode structure

Electric lamp and discharge devices – Electrode and shield structures – Filament or resistance heated electrodes
Patent

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Directly heated cathode for electron tube

Electric lamp and discharge devices – Electrode and shield structures – Filament or resistance heated electrodes
Patent

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Directly heated cathode for electron tube

Electric lamp and discharge devices – Electrode and shield structures – Filament or resistance heated electrodes
Patent

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Directly heated cathodes

Electric lamp and discharge devices – Electrode and shield structures – Filament or resistance heated electrodes
Patent

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Directly heated meshed cathode for electronic tubes and method o

Electric lamp and discharge devices – Electrode and shield structures – Filament or resistance heated electrodes
Patent

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Directly-heated cathode structure

Electric lamp and discharge devices – Electrode and shield structures – Filament or resistance heated electrodes
Patent

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Directly-heated cathodes

Electric lamp and discharge devices – Electrode and shield structures – Filament or resistance heated electrodes
Patent

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Double layer electrode coil for a HID lamp and method of...

Electric lamp and discharge devices – Electrode and shield structures – Filament or resistance heated electrodes
Reexamination Certificate

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