Devices for holding paper, cards, and/or wallets. One device has a clip with two ends and a leverage bump; and an arm pivotally coupled to each end. One of the arms contacts the leverage bump when the clip is opened. Another device includes a clip having a receiving portion and a holding portion. The...http://www.google.es/patents/US7536753?utm_source=gb-gplus-sharePatente US7536753 - Devices for holding paper, cards and wallets
