[elecena] U2840B - zmiany ceny I.C. U2840B - 22.00 PLN https://elecena.pl/product/228986/u2840b 2007-02-27 U2840B - 22.18 PLN https://elecena.pl/product/228986/u2840b 2011-01-05 U2840B - 22.00 PLN https://elecena.pl/product/228986/u2840b 2013-12-09