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| - 672, US6446672 B1, US6446672B1InventorsMark D. Kalman, Dana J. FraserOriginal AssigneeWellstream, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (21), Non-Patent Citations (1), Referenced by (18), Classifications (12), Legal Events (12) External Links: USPTO, USPTO Assignment, EspacenetFlexible pipe including vent passage and method of manufacturing same
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