This Mug Keeps Coffee Warm (Not Piping Hot) For Hours On End, Innovation

This Mug Keeps Coffee Warm (Not Piping Hot) For Hours On End, Innovation

An inventor may have perfected a way to make scalding hot coffee or tea instantly warm, and keep it that way

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This genius mug keeps my coffee warm all morning

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This Mug Keeps Coffee Warm (Not Piping Hot) For Hours On End, Innovation

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Mr. Coffee Mug Warmer at