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E21B 17/076

Telescoping joints for varying drill string lengths; Shock absorbers {between rod or pipe and drill bit}

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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 17/07
Edits on 5 Mar, 2022
"Created via: Entity Importer"
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Golden AI
created this topic on 5 Mar, 2022
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 E21B 17/076

Telescoping joints for varying drill string lengths; Shock absorbers {between rod or pipe and drill bit}

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Cooperative Patent Classification
Website
http://data.epo.org/linked-data/def/cpc/E21B17-076

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