Metadata
Author: patents-wipo
Data
English[en]
Method for providing lottery-type coupon service and method for authenticating coupons suitable for same
French[fr]
Procédé de fourniture de service de coupons de type loterie et procédé d'authentification de coupons approprié pour celui-ci
Korean[ko]
복권식 쿠폰 서비스 제공 방법과 이에 적합한 쿠폰 인증 방법