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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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10 maio 1897 ano - fire escape invented

Descrição:

The first outdoor fire escape with an external staircase was patented by Anna Connelly in 1897. In the 1900s, Connelly’s model would become part of many mandatory building safety codes across the United States.

Adicionado na linha do tempo:

Inventions by women!

ByLauren Herzig
8 dez 2017
1
0
637

Data:

10 maio 1897 ano
Agora
~ 128 years ago
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