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PCE
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CPC Subgroup
F42B 3/16

delay initiators (F42B3/195 takes precedence; )

Full Title

Blasting cartridges, i.e. case and explosive (fuse cords, e.g. detonating fuse cords C06C5/00; chemical aspects of detonators, blasting caps or primers C06C7/00) > Initiators therefor (percussion fuzes F42C7/00; percussion caps F42C19/10; electric primers F42C19/12) > delay initiators (F42B3/195 takes precedence; )