4. Coating processes
  5. Electrical product produced
  6. Filament for lamp or tube

Terutoshi Ichihara

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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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Heater for indirectly-heated cathode

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

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Method of producing dark heater

Coating processes – Electrical product produced – Filament for lamp or tube
Patent

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Profile ID: LFUS-PAI-P-1046444

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