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La fabricación o elaboración de sacos y fundas de almohada sin costura ni cosidos, o sea, de una sola pieza, de hilo, de algodón y de yute respectivamente.
Una máquina para fabricar botinas o zapatillas de trencilla o lana hilada y enfurtida, tejidas contumada y sucesivamente en una sola pieza, o sea, sin costura en su parte superior ni en ninguno de sus lados visibles.
Un procedimiento para la fabricación de zapatillas de trencilla o tiras de lona hilada y enfieltrada tejidas a máquina y de una sola pieza, o sea, sin costura en su parte superior.