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Sampler for offshore work
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Self-contained well bottom sapler
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Underwater apparatus for taking cores
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Hydraulic grapple
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Hydraulic clamshell
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Underwater soil-excavating device
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Self-sustaining hole-bottom sampler
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Hole-bottom sampler
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"gutisar" sea sampler
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Underground gardan soil-taking device
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Apparatus for protecting the man from traumas when falling
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