Patent classifications
H
ELECTRICITY
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H01
ELECTRIC ELEMENTS
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H01J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
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43/00
Secondary-emission tubes; Electron-multiplier tubes
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H01J43/18
Electrode arrangements using essentially more than one dynode
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H01J43/22
Dynodes consisting of electron-permeable material, e.g. foil, grid, tube, venetian blind
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