Life tungsten filament for incandescent lamp

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

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427 52, 427111, H01J 912

Patent

active

045197857

ABSTRACT:
A method for increasing the life and stability of tungsten filaments by burning the filaments in an atmosphere containing WF.sub.6. The procedure effects hot spot repair of the filaments by localized deposition of tungsten thereon.

REFERENCES:
patent: 699232 (1902-05-01), Potter
patent: 3811936 (1974-05-01), Archer et al.
patent: 4374901 (1983-02-01), Ferrar

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