10 magg 1897 anni - fire escape invented
Descrizione:
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.Aggiunto al nastro di tempo:
Data:
10 magg 1897 anni
Adesso
~ 128 years ago