75259023
Mar 13, 1997
Mar 2, 1999
system for railroad classification yards, namely, retarders, controlled retarders, stop wagon retarders, controlled stop wagon retarders, boosters, controlled boosters, maintenance and testing machines and rail drills, all or some of which will be applied in a specific classification yard to suit the specific requirements
Machinery[ system for railroad classification yards, namely, speed sensors, weight sensors, controlled computers ]
Electrical and Scientific Apparatus