IPIQ

H

ELECTRICITY

H01

ELECTRIC ELEMENTS

H01J

ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

2201/00

Electrodes common to discharge tubes

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H01J2201/28

Heaters for thermionic cathodes

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H01J2201/2803

Characterised by the shape or size

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H01J2201/2867

Spiral or helix

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Sorry, no patents found.