MIL-C-85521 (NOTICE-1) MILITARY SPECIFICATION: CONCENTRATOR, OXYGEN, GGU-7/A (23-JUL-1997)

MIL-C-85521 (NOTICE-1) MILITARY SPECIFICATION: CONCENTRATOR, OXYGEN, GGU-7/A (23-JUL-1997)., This notice should be filed in front of MIL-C-85521(AS), dated 5 August 1983, and Amendment 1, dated 29 September 1995. MIL-C-85521(AS) is inactive for new design and is no longer used, except for replacement purposes.