About the inventor
Name: Joana
Age:21-100
Gender:Female
Country:Portugal
City: Lisboa
What will this machine do?
Parece uma calçadeira ou uma mola que colocamos entre a porta e o vão ao puxar diminui o embate da porta e o barulho.
Why was it invented?
Batem muito com as portas.
When was it invented?
Monday, October 14th, 2019