Description
Class F42B : EXPLOSIVE CHARGES, e.g. FOR BLASTING; FIREWORKS; AMMUNITION
Subclass 3/117: Blasting cartridges, i.e. case and explosive (fuse cords, e.g. detonating fuse cords, C06C 5/00; chemical aspects of detonators, blasting caps or primers C06C 7/00) Initiators therefor (percussion fuzes F42C 7/00; percussion caps F42C 19/1; electric primers F42C 19/12) activated by friction