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Priority claimed from NL6908537Aexternal-prioritypatent/NL154911C/en
Priority claimed from NL6910757Aexternal-prioritypatent/NL158359C/en
Application filed by Zweegers PfiledCriticalZweegers P
Priority claimed from IE676/70Aexternal-prioritypatent/IE34222B1/en
Publication of IE34223LpublicationCriticalpatent/IE34223L/en
Publication of IE34223B1publicationCriticalpatent/IE34223B1/en