1844 (1 дек 1844 г. – 1 апр 1845 г.)
Описание:
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.Добавлено на ленту времени:
Дата:
1 дек 1844 г.
1 апр 1845 г.
~ 4 months