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3498375
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Information
Patent Grant
3498375
References
Source
Patent Number
3,498,375
Date Filed
Not available
Date Issued
Tuesday, March 3, 1970
54 years ago
CPC
E21B33/064 - specially adapted for underwater well heads
E21B3/045 - movably mounted on the drilling structure or platform
E21B15/02 - specially adapted for underwater drilling
E21B33/06 - Blow-out preventers, i.e. apparatus closing around a drill pipe
US Classifications
166 - Wells
175 - Boring or penetrating the earth
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