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Priority claimed from US06/572,301external-prioritypatent/US4520002A/en
Application filed by Merichem CofiledCriticalMerichem Co
Priority to IN628/MAS/87ApriorityCriticalpatent/IN167056B/en
Publication of IN167056BpublicationCriticalpatent/IN167056B/en
Method for preparing elemental sulfur as a diffusion-resistant gas and methods for its use in making lime, sulfur dioxide and sulfuric acid from waste gypsum