In context: Back in 1970, a futuristic "human washing machine" called the Ultrasonic Bath caused a sensation at the Japan World Exposition. The egg-shaped pod was developed and exhibited by Sanyo ...
A new ultrasonic cleaner has launched via Kickstarter this month in the form of the Ultrasona, a compact ultrasonic cleaner that is capable of cleaning a variety of different items to a microscopic ...
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