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

Masaru Nakazawa

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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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Toroidal core winding method and automatic winding apparatus

Winding – tensioning – or guiding – Composite article winding – Through opening in ring-shaped core
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1926994

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