MIL-B-121 Complete Document History
Barrier Material, Greaseproofed, Waterproofed, Flexible

Complete Current Edition:
   RENUMBERED - MIL-PRF-121 - April 30, 2001

Obsolete Revision Information:
   REV F REACTIVATION 2 - REACTIVATION NOTICE 2, REV F - Dec. 15, 1999
   REV F INACTIVATION 1 - INACTIVATION NOTICE 1, REV F - Dec. 29, 1997
   REVISION F - Barrier Material, Greaseproof, Waterproof, Flexible, Heat-Se - June 16, 1989
   REV E AMENDMENT 4 - AMENDMENT 4 FOR REVISION E - Sept. 16, 1982
   REV E AMENDMENT 2 - INTERIM AMENDMENT 2 FOR REV E - April 13, 1978
   REV E AMENDMENT 1 - AMENDMENT 1 FOR REVISION E - Oct. 5, 1977
   REVISION E - Barrier Material, Greaseproof, Waterproof, Flexible, Heat-Se - Dec. 3, 1976
   REVISION B - Barrier Material, Greaseproof, Waterproof, Flexible, Heat-Se - Jan. 1, 1960