1 mai 1839 - American, Thaddeus Fairbanks invents platform scales. American, Charles Goodyear invents rubber vulcanization. Frenchmen, Louis Daguerre and J.N. Niepce co-invent Daguerreotype photography. Kirkpatrick Macmillan invents a bicycle. Welshmen, Sir William Robert Grove conceives of the first hydrogen fuel cell.
Ajouté au bande de temps:
Date:
1 mai 1839
Maintenaint
~ Il y a 186 ans