CPC Main Group
E21C 50/00 Obtaining minerals from underwater, not otherwise provided for (suction dredgers or component parts thereof E02F3/88; equipment for conveying or separating excavated material E02F7/00; dippers G01N1/12)
1 direct subcode
Child Classifications
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- E21C 50/02 dependent on the ship movements (vessels or floating structures adapted for special purposes B63B35/00)