Class	Subclass	Patent
PLT	157	PP021777
	250	PP021778
		PP021779
	251	PP021780
	272	PP021781
	288	PP021782
		PP021783
		PP021784
	289	PP021785
	293	PP021786
	320	PP021787
	384	PP021788
	390	PP021789
	428	PP021790
	451	PP021791