WS27C256L Military 32K x 8 CMOS EPROM KEY FEATURE.
WS27C256L-15 - Military 32K x 8 CMOS EPROM
WS27C256L-15DMB - Military 32K x 8 CMOS EPROM
WS27C256L-15TMB - Military 32K x 8 CMOS EPROM