CPC Subgroup
F42D 1/04 Arrangements for ignition
Full Title
Blasting methods or apparatus, e.g. loading or tamping > Arrangements for ignition
5 direct subcodes
Child Classifications
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- F42D 1/045 Arrangements for electric ignition (dynamo-electric generators H02K)
- F42D 1/06 Relative timing of multiple charges ( F42D1/055 take precedence)