H03F 2201/00
Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by [CPC: H03F1/00]
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Edits on 16 Mar, 2022
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Edits on 5 Mar, 2022
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H03F 2201/00
Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by [CPC: H03F1/00]
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