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1 abr 1834 ano - Henry Blair patents a corn planter, he is the second black person to receive a U.S. patent. Jacob Perkins invents an early refrigerator (really an ether ice machine).

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WH timeline pt 2

Bygabe
27 set 2021
0
0
435

Data:

1 abr 1834 ano
Agora
~ 191 years ago
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