E21B 17/1035
Wear protectors; Centralising devices {, e.g. stabilisers for plural rods, pipes or lines, e.g. for control lines}
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Edits on 5 Mar, 2022
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E21B 17/1035
Wear protectors; Centralising devices {, e.g. stabilisers for plural rods, pipes or lines, e.g. for control lines}
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