The first free-fall parachute jump using a backpack was made
On the 19th April, 1919, Leslie Leroy Irvin made the first free-fall parachute jump, using a rip cord to deploy the parachute from a backpack rather than from the aircraft itself.
Cheming gum was patented by a dentist! William Semple patented his early rubbery gum in 1869.
On the 19th April, 1919, Leslie Leroy Irvin made the first free-fall parachute jump, using a rip cord to deploy the parachute from a backpack rather than from the aircraft itself.


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