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Application filed by Ingemar Johansson, Jorgen SkoghfiledCriticalIngemar Johansson
Priority to SE8300935ApriorityCriticalpatent/SE450992B/sv
Publication of SE8300935D0publicationCriticalpatent/SE8300935D0/sv
Publication of SE8300935LpublicationCriticalpatent/SE8300935L/sv
Publication of SE450992BpublicationCriticalpatent/SE450992B/sv
Dispositivo utilizzabile in particolare per il pompaggio di un fluido molto viscoso e/o contenente una proporzione considerevole di gas, particolarmente per la produzione di petrolio