Many inventors File patents for incandescent light bulbs (that aren't very long-lasting) (1 gen 1841 anni – 1 gen 1874 anni)
Descrizione:
1841- Frederick de Moleyns
1845-John Wellington Star
1852- Jean Eugene Robert Houdin
1858- Samuel Gardiner and Leu Blossom
1872- Alexander Lodygin
1874- Henry Woodward & Mathew Evans
Aggiunto al nastro di tempo:
Data:
1 gen 1841 anni
1 gen 1874 anni
~ 33 years