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The Clever Device That Dispensed Water in Exchange for Coins

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The invention demonstrated how simple mechanical principles could automate everyday tasks. One invention used a coin-operated mechanism to dispense a measured quantity of water. The weight of the coin temporarily https://music.amazon.it/podcasts/69d3b9a8-ce50-4beb-8cef-e2712da6057e/episodes/a76ffe28-6efc-4ae7-a23f-f87f572fdab7/e39life
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