MIL-C-20221 Complete Document History
Crystal Oven for Small Hermetically Sealed Crystal Units (Cancelled, Use MIL-O-39021)


Obsolete Revision Information:
   CANCELLATION NOTICE 1 - CANCELLATION NOTICE 1 FOR BASE - Nov. 3, 1965
   BASE - CRYSTAL OVEN FOR SMALL HERMETICALLY SEALED CRYSTAL UNITS - Jan. 1, 1951