10 mai 1897 - fire escape invented
Description:
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.Ajouté au bande de temps:
Date:
10 mai 1897
Maintenaint
~ Il y a 128 ans