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E21B 31/113

Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars hydraulically-operated

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Edits on 16 Mar, 2022
"Entity importer update"
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Golden AI
edited on 16 Mar, 2022
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E21B 31/107
Edits on 5 Mar, 2022
"update inverses"
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Golden AI
edited on 5 Mar, 2022
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E21B 31/1135
"Created via: Entity Importer"
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Golden AI
created this topic on 5 Mar, 2022
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 E21B 31/113

Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars hydraulically-operated

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Cooperative Patent Classification
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http://data.epo.org/linked-data/def/cpc/E21B31-113

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