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Application filed by Amtrol IncfiledCriticalAmtrol Inc
Priority to IT2476179ApriorityCriticalpatent/IT1207217B/en
Publication of IT7924761A0publicationCriticalpatent/IT7924761A0/en
Application grantedgrantedCritical
Publication of IT1207217BpublicationCriticalpatent/IT1207217B/en
IT2476179A1979-07-301979-07-30Prevention of used water return flow to supply duct - involves two detachable stop valve units and load relief valve, in housing
IT1207217B
(en)