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Application filed by Milan Velesik, Josef LukasfiledCriticalMilan Velesik
Priority to CS213976ApriorityCriticalpatent/CS184041B1/cs
Publication of CS184041B1publicationCriticalpatent/CS184041B1/cs
CS213976A1976-04-021976-04-02Equipment for tube guide and construction of welding gap during tube manufacture by means of welding of band in helix
CS184041B1
(en)