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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49/00
Particle spectrometers or separator tubes
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H01J49/26
Mass spectrometers or separator tubes
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H01J49/36
Radio frequency spectrometers, e.g. Bennett-type spectrometers, Redhead-type spectrometers
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H01J49/38
Omegatrons; ; using ion cyclotron resonance
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