Quick view Add to Cart Handbook of Instructions with Parts Catalog for Type A-13 Portable Oxygen Demand Regulator [j22rosjw7] Document Part Number: AN 03-50A-9 Number of pages: 28Part Number: AN 03-50A-9Revision Date: 20-April-1944Description: Manufactured by: Scott Aviation, Lancaster N.Y. MSRP: Was: Now: $19.62