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Home › Locking mandrel having dogs for latching to a landing nipple and lugs for latching to an operator reciprocal in the landing nipple

Locking mandrel having dogs for latching to a landing nipple and lugs for latching to an operator reciprocal in the landing nipple

US Patent 4403657 · Granted Sep 13, 1983

Estimated economic value: $21,216,000 ⓘ

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