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Application filed by Vacuum Capatainer IntfiledCriticalVacuum Capatainer Int
Priority to PT7031779ApriorityCriticalpatent/PT70317A/pt
Publication of PT70317ApublicationCriticalpatent/PT70317A/pt
PT7031779A1979-10-151979-10-15Hermetic sealing under vacuum of polyethylene container neck - by heat of friction generated by vibrating clamping jaws
PT70317A
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