Subclass	Subgroup	Patent
F28D	9/005	12392557
	15/00	12392558
	15/0241	12392559
	15/025	12392560
	15/0266	12392561
F28F	1/006	12392562
	3/12	12392563
		12392564
	9/0246	12392565
	13/12	12392566
	13/185	12392567
	25/12	12392568