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Priority claimed from DE19752508048external-prioritypatent/DE2508048B2/de
Priority claimed from DE19752525793external-prioritypatent/DE2525793A1/de
Application filed by Petz Elektro Waerme TechnfiledCriticalPetz Elektro Waerme Techn
Publication of ATA747475ApublicationCriticalpatent/ATA747475A/de
Application grantedgrantedCritical
Publication of AT344831BpublicationCriticalpatent/AT344831B/de