Who invented the BALLPOINT PEN?

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Who invented the BALLPOINT PEN?

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

2) When was barb wire patented?

3) When was the first lawn mower invented?

4) What 'game' was first produced by the Southern Novelty Company in Baltimore, Maryland in 1892?

5) Who invented Bifocal Lens?

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