R-BULB

[ Electric fuse elements, namely, electric fuses and electric fuse boxes; ] elements for interrupting electrical lines in the event of overheating, namely, bursting vessels provided or coated with electrical conductors and filled with thermally sensitive release fluid being thermally actuated circuit breakers in the nature of explosive containment vessels; fire-extinguishing devices and apparatus, namely, [ thermally actuated bursting vessels filled with extinguishing agents, ] thermally activated glass vials being receptacles and bursting vessels for sprinklers, smoke or fire dampers, and for safety valves used in gas-operated and hydrogen-operated vehicles