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Inventions

Inventions
When were bar code scanners invented?

1960s
1970s
1950s
1940s

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Inventions
Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that?

Motorboat
Hang glider
Water skis
Golf tee

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Inventions
For what does the world owe Almon Strowger a debt of gratitude?

Parking Meters
Vending Machines
Traffic Lights
Automatic Telephone Exchanges

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Inventions
It travels over land and water. Who invented the HOVERCRAFT?

C. Cockerell
T. Henman
S. Sperrow
O. Stricheg

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Inventions
What Thomas Davenport invented?

Electric streetcar
Chesterfield
Screw propellor
Sleeping (railway) car

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Inventions
When was the game Frisbee invented?

1890s
1900s
1920s
1870s

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