inventos S. XX By jhola Sep 21, 1901 lavadora Sep 29, 1906 caja rejistradora Sep 21, 1907 tractor Sep 21, 1912 cremallera Sep 29, 1913 bombilla Sep 29, 1920 furgón blindado Sep 29, 1940 boligrafo Sep 29, 1945 microondas
