Deepwater oil drilling and storage craft
United States Patent 2699321
US Patent References:
/0307861.html
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/0480127.html
- - 0480127

/0616567.html
- - 0616567

/0676993.html
- - 0676993

/0819317.html
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Inventors:
Nelson, Fred N.
Publication Date:
01/11/1955
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Assignee:
Nelson, Fred N.
Primary Class:
175/8
Other Classes:
441/23, 441/3, 175/9, 114/264, 405/227, 114/260
International Classes:
E02B17/02; E21B7/04; E21B7/12; E21B15/02; E02B17/00; E21B15/00
US Patent References:
0873069
1048194
2171672Underwater drilling
2248051Offshore drilling rig
2308743Barge
2429952Underwater foundation and method of erecting the same
2503516Method of and apparatus for exploiting oil or other mineral deposits underlying submerged areas
Foreign References:
DE516047C
DE670470C