Original Assignee Kennecott Copper Corp Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Inventor John R Graham Algernon A Mabson Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US453784A Other languages English ( en) Google Patents Process and apparatus for mining deposits on the sea floorÄownload PDF Info Publication number US3456371A US3456371A US453784A US3456371DA US3456371A US 3456371 A US3456371 A US 3456371A US 453784 A US453784 A US 453784A US 3456371D A US3456371D A US 3456371DA US 3456371 A US3456371 A US 3456371A Authority US United States Prior art keywords pipe tractor dredge pipe sea floor dredge Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US3456371A - Process and apparatus for mining deposits on the sea floor ![]() US3456371A - Process and apparatus for mining deposits on the sea floor
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