4. Electric lamp and discharge devices
  5. Cathode ray tube
  6. Ray generating or control

Norio Iwamura

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Cathode ray tube having an improved cathode

Electric lamp and discharge devices – Electrode and shield structures – Cathodes containing and/or coated with electron emissive...
Reexamination Certificate

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Cathode ray tube having an improved heater

Electric lamp and discharge devices – Electrode and shield structures – Indirectly heated cathodes
Reexamination Certificate

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Cathode ray tube having an improved indirectly heated cathode

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

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Cathode ray tube having an improved indirectly heated cathode

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

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Cathode ray tube having an improved indirectly heated...

Electric lamp and discharge devices – With support and/or spacing structure for electrode and/or... – For indirectly heated cathode
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Profile ID: LFUS-PAI-P-2118437

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