Philip B. Downing's lifetime he successfully filed 5 patents, ranging from the modern day letterbox, anti tampering function in the mailbox, envelope moistener which used a roller, an easily accessible desktop notepad, and street railway switches.

#BlackHistory #BlackInventors #PhilipDowning

#PhilipDowning
a #breveté son #invention
la #boîte aux #lettres (de rue)
en 1891.

Au XIXe #siècle
on devait parcourir un long trajet jusqu'au #bureau de #poste.

Il a conçu une boîte #métallique de 4 pi … #baptisé «boîte aux lettres de #rue» ( #ancêtre de la boîte aux lettres actuelle)

Regardless of what's going on in politics, that will NEVER stop me from celebrating Black History Month. Each day, Shamontiel will highlight a video of a Black History fact. Enjoy!

Day 1 #BlackHistoryMonth
www.youtube.com/watch?v=HJ2d... #mailbox #USPS #USMail #PhilipDowning