BS-3143-4 › Complete Document History
Specification for High Intensity Battery Operated Beacons


Obsolete Revision Information:
   1985 EDITION - REAFFIRMED IN 1993 - Feb. 28, 1985
   AMD 4847 - AMENDMENT 1 FOR 1985 EDITION - Feb. 1, 1985
   1973 EDITION - OBSOLETE EDITION - Jan. 1, 1973