1987-11-20 /bb-l014r-bm_tops20_v6_1_atpch_18/01/autopatch/lnkov2.x18 1987-12-18 /bb-bt99l-bb/01/lnkov2.x18 1988-05-04 /bb-y390o-bm_tops20_v41_atpch_20/01/autopatch/lnkov2.x18 1988-06-01 /bb-jr93e-bb/18/7,6/ap018/lnkov2.x18