CPC Subgroup
B04C 3/02 with heating or cooling, e.g. quenching, means
Full Title
Apparatus in which the axial direction of the vortex remains unchanged > with heating or cooling, e.g. quenching, means
B04C 3/02 Apparatus in which the axial direction of the vortex remains unchanged > with heating or cooling, e.g. quenching, means