1844 (1 dez 1844 ano – 1 abr 1845 ano)
Descrição:
Charles Goodyear obtained a patent to develop a method to treat rubber to make it stronger. This was a continuity because inventors were already working on a way to advance the economy.
Adicionado na linha do tempo:
Data:
1 dez 1844 ano
1 abr 1845 ano
~ 4 months