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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