[56] References Cited UNITED STATES PATENTS 475,259 5/1892 Turck ......................... .. » 24/67.5 881,514 3/1908 Wiedeman ................. .. 24/67.7
Primaiy Examiner— Donald A. Griffin Anorney—Cullen, Sloman & Cantor
ABSTRACT: A looseleaf binder in which a pair of clamping elements are biassed towards each other by one or more curved springs, in a manner pennitting sheets of paper to be gripped between said clamping elements, has a first pocket of synthetic plastics material housing one of the clamping elements, and a second pocket of synthetic plastics material housing the other one of the clamping elements, said first pocket being integral with, or forming part of, a front cover of synthetic plastics material, said second pocket being integral with, or forming part of, a rear cover of synthetic plastics material. _
