CH417214ACH554864ACH554864ACH417214ACH 417214 ACH417214 ACH 417214ACH 554864 ACH554864 ACH 554864ACH 554864 ACH554864 ACH 554864ACH 417214 ACH417214 ACH 417214A
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Priority claimed from GB548064Aexternal-prioritypatent/GB988351A/en
Application filed by Marcan DavidfiledCriticalMarcan David
Publication of CH417214ApublicationCriticalpatent/CH417214A/de