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Application filedfiledCritical
Priority to DD18024674ApriorityCriticalpatent/DD119449A2/xx
Priority to ES430708Aprioritypatent/ES430708A1/es
Priority to GB4313074Aprioritypatent/GB1449427A/en
Priority to DE19742447596prioritypatent/DE2447596A1/de
Publication of DD119449A2publicationCriticalpatent/DD119449A2/xx