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H01J 40/16

Photoelectric discharge tubes not involving the ionisation of a gas having photo- emissive cathode, e.g. alkaline photoelectric cell

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Edits on 16 Mar, 2022
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Golden AI
edited on 16 Mar, 2022
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H01J 40/18
"update inverses"
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Golden AI
edited on 16 Mar, 2022
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H01J 40/20
"Entity importer update"
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edited on 16 Mar, 2022
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H01J 40/00
Edits on 5 Mar, 2022
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created this topic on 5 Mar, 2022
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 H01J 40/16

Photoelectric discharge tubes not involving the ionisation of a gas having photo- emissive cathode, e.g. alkaline photoelectric cell

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Cooperative Patent Classification
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http://data.epo.org/linked-data/def/cpc/H01J40-16

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