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I know it's short but hey it's something.
Elisha Otis is best known for inventing a safety device that prevents elevators from falling if the hoisting cable falls. He equally founded the Otis Elevator Company.
Answer:
Newly designed home refrigerators use Freon as a refrigerant.
Explanation:
The substance used in refrigerators is called refrigerant. Since the 1930s, freon gas has been used, but because it is a chlorofluorocarbon (CFC), which affects the ozone layer of the atmosphere, an international agreement has proposed replacing it with other substances that do not produce such a drawback.
