20140137373 | PRESSURE SNAP FASTENER WITH A BIVALENT CLOSURE - A pressure snap fastener with a bivalent closure comprises a first portion, to be associated with a first flap, and a second portion, to be associated to a second flap; said portions, as associated with one another joining the flaps. The pressure snap fastener further comprises first temporary engagement means providing a temporary closure, in which the two portions are joined by a weakly joining and are free of partially swinging, and second stable engagement means, providing a stable closure, in which the two portions are tightly coupled. | 05-22-2014 |