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H04M 19/02

Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

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Edits on 16 Mar, 2022
"update inverses"
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Golden AI
edited on 16 Mar, 2022
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H04M 19/026
"update inverses"
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Golden AI
edited on 16 Mar, 2022
Edits made to:
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Infobox
Child classification
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H04M 19/04
"Entity importer update"
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Golden AI
edited on 16 Mar, 2022
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H04M 19/00
Edits on 5 Mar, 2022
"update inverses"
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Golden AI
edited on 5 Mar, 2022
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Child classification
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H04M 19/026
Child classification
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H04M 19/023
"update inverses"
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Golden AI
edited on 5 Mar, 2022
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Child classification
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H04M 19/026
"Created via: Entity Importer"
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Golden AI
created this topic on 5 Mar, 2022
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Description (+129 characters)
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 H04M 19/02

Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Infobox
Is a
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Patent classification
Classification Type
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Cooperative Patent Classification
Website
http://data.epo.org/linked-data/def/cpc/H04M19-02

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