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List four new inventions, designs or ideas of the 1780s

User Raybarg
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Piano, ice cream, mayonnaise. All I can think of.
User Emmanuelle
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1780: Bifocal glasses were invented by Benjamin franklin
1783: invention of the hot air balloon
1784: the safety lock is invented by Joseph Bramah
1785: invention of a parachute by Blanchard

User Justin Summerlin
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