4. Electric lamp and discharge devices
  5. Discharge devices having a thermionic or emissive cathode

Rie Ueno

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Electron-emitting device and electron beam-generating apparatus

Electric lamp and discharge devices – Discharge devices having a thermionic or emissive cathode
Patent

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Electron-emitting device having carbon films with a...

Electric lamp and discharge devices – Discharge devices having a thermionic or emissive cathode
Reexamination Certificate

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Electron-emitting device, and electron beam-generating apparatus

Electric lamp or space discharge component or device manufacturi – Process – Electrode making
Patent

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Electron-emitting device, and electron beam-generating...

Incremental printing of symbolic information – Electric marking apparatus or processes – Electrostatic
Reexamination Certificate

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Electron-emitting device, electron source using the...

Electric lamp and discharge devices – Discharge devices having a thermionic or emissive cathode
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1890372

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