having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders

Full Title

Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 > having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders