4. Electricity: measuring and testing
  5. Electric lamp or discharge device
  6. Cathode-ray tube

Bong-wook Jung

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Cathode ray tube

Electricity: measuring and testing – Electric lamp or discharge device – Cathode-ray tube
Reexamination Certificate

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Electron gun and cathode ray tube using the same

Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Reexamination Certificate

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Electron gun for color cathode ray tube

Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Reexamination Certificate

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Electron gun for CRT with helical multi-lens electrode assembly

Electric lamp and discharge devices – Cathode ray tube – Ray generating or control
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2474867

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