التالي

تشغيل تلقائي

This Inventor Risked His Life on His Own Invention

0

0

1,872 المشاهدات· 10/22/23

Smithsonian Channel
1,606 مشتركين

في Discovery

In 1916, 32 men were trapped in a mine near Lake Erie. Garrett Morgan saw an opportunity to prove his fireproof hood worked - and went in to rescue them. From: MY MILLION DOLLAR INVENTION:...

أظهر المزيد

0 تعليقات

التالي

تشغيل تلقائي

الصفحة الرئيسية

استكشاف المزيد

يساعد