They also inventented the ram pump
the Montgolfier Brothers invented the hot air balloon on 5Th of April 1783 and fled it for the first time on 5Th of June
The names of the Montgolfier brothers are Joseph and Etienne.
The brothers were the first humans on earth to take flight. They used hot air balloons. At first they sent up farm animals (duck, chicken and sheep) then they sent up Jacques.
The Lazlo brothers invented the ballpoint pen.