Subclass	Subgroup	Patent
E02D	5/38	12392101
	5/385	12392102
	5/526	12392103
	7/28	12392104
	27/08	12392105
E02F	3/435	12392106
	3/439	12392107
	9/10	12392108
	9/2033	12392109
	9/2087	12392110
	9/2203	12392111
	9/26	12392112
		12392113
	9/267	12392114