Quick view Add to Cart Handbook of Instructions with Parts Catalog for Demand Oxygen Regulator Type A-12 Document Part Number: AN 03-50A-8 Number of pages: 24Part Number: AN 03-50A-8Revision Date: 15-June-1945Description: Manufactured by: Aro Equipment, Air Reduction Sales co., Johnson Far Box Company, National Die Casting MSRP: Was: Now: $17.94