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Okay: I think I should declare orlok the winner. Herewith the rest of the answers:
1. Harry Coover born in the USA.
3. William Addis invented and manufactured the first toothbrush. (He was in prison and wanted to be able to clean his teeth more satisfactorily. He made and sold them after he got out, and his company is supposedly the forerunner of Wisdom toothbrushes.)
4. Raymond Kurzweil also invented the flatbed scanner.
6. Lenoir was born in Belgium and invented the internal combustion engine and the motorboat.
9. Faust Vrancic invented the parachute (i.e. made one that worked as opposed to drawing one as Leonardo did.)
10. Budding invented the lawnmower and the adjustable spanner.
Over to you, orlok.
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