also the leap into electronic typesetting, remaining essentially
L-T3146SB
L-T3224SB
L-T3145SB
L-T3292 series
L-T3148SB
L-T3229SB
L-T3291 series
L-T3154SB
L-T3228
L-T3147SB
L-T3293 series
L-T3223SB
L-T3294 series
