-
armas de fuego+
Daniel Leavitt -
telescopio
Hans Lippepshey -
alto horno
Abraham Darby -
telares mecanicos
Richard Arkwrigth -
pila volta
Alessandro Volta -
fotografias
joseph nicepone -
motores electricos
michael farady -
neumaticos
alfred novel -
dinamita
alfred novel -
telefono
alejandro graham -
bombilla edison
thomas edison -
telegrafo
boyd punlop -
locomotora stephenson
robert stephenson