'Gymnast George Nissen invented the first modern one of these in 1936; some called it a bouncing net'
a trampoline
INVENTIONS: Gymnast George Nissen invented the first modern one of these in 1936; some called it a bouncing net
Gymnast George Nissen invented the first modern one of these in 1936; some called it a bouncing net
Gymnast George Nissen invented the first modern one of these in 1936; some called it a bouncing net
INVENTIONS
a trampoline
INVENTIONS