4. Electric lamp or space discharge component or device manufacturi
  5. Process
  6. Electrode making

Pehr Pehrsson

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Apparatus for emitting electrons comprising a subsurface...

Electric lamp and discharge devices – Discharge devices having an electrode of particular material
Reexamination Certificate

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Method of making electron emitters

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

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Profile ID: LFUS-PAI-P-2602836

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