The Microwave oven invented by Raytheon in 1945 while doing radar testing.
Goodyear
plastics, automatic switchboards, glass tubing, conveyor belts & concrete mixers.
i have no ideas about past..... :(
Airplane's
new technology applied in the war.
Technology during World War II opened up an entirely new door into what the enemy was doing in areas in which they were once hidden. New pesticides, nuclear technology, and jet engines made the fight faster than it had been in the first World War.
Use Your Knowledge =)
Radar
Jet engines, rocket power and antibiotics
The war was the deadliest in history up to that point
Increase in the number of nations that could fight in the war...