Device for emitting electrons

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

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Details

313310, 313309, 313336, 313351, H01J1/00

Patent

active

059030925

ABSTRACT:
A device comprising a conductor and an emitter electrode for emitting electrons formed on the conductor, the emitter electrode including a mass of a plurality of columnar crystals each containing .beta.-tungsten and having a sharpened tip end portion for emitting electrons, the plurality of columnar crystals being put in contact with one another.

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