DIFF Subgroup
G06Q 20/223 Full Title
Payment architectures, schemes or protocols (apparatus for performing or posting payment transactions G07F7/08, G07F19/00; electronic cash registers G07G1/12) > Payment schemes or models
G06Q 20/223 Payment architectures, schemes or protocols (apparatus for performing or posting payment transactions G07F7/08, G07F19/00; electronic cash registers G07G1/12) > Payment schemes or models