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1. A joint for floors that are constituted by a series of strips, which is constituted by a single linear bar which is constituted by a central planar body from which a single first tab and a single second tab, which are elastically deformable and selectively associable at seats provided in a lower region and longitudinally with respect to said strips and adjacent to longitudinal perimetric edges thereof, protrude laterally, said single first tab and said single second tab being substantially S-shaped with a free end directed toward an outside of said planar body, wherein said linear bar is made of plastic material, and wherein said single first tab and said single second tab protrude laterally from said planar body with a continuous rectilinear profile along said planar body and have a first portion, substantially arc-shaped and configured for blending with said planar body, which protrudes toward the outside of said planar body, a second portion, contiguous and blended with the respective said first portion, which protrudes and is directed toward an inside of said planar body, and a third portion, contiguous and blended with said second portion, which protrudes toward the outside of said planar body, said seats having a shape that is substantially complementary at least to a shape of said first portions and at least to a shape of an initial part of said second portions.
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