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refregirator
1 Jan 1820 Michael Faraday a londer liquefied a mmonia to cause cooling. -
vacuum cleaner prodotype called aspirator invented by Ives Mcgaffy
prodotype called aspirator invented by Ives Mcgaffy -
microwave
by ancient they discoveredthat microwave oven cooks food in 1946 Dr Pency discovered something unusual he as next to a microwave and his choclate bar that was in his pocket melted. -
William Hoover
Willam Hoover manufactunig machines.hoover is still on of the markers of vacuum cleaner in the world -
the newest vacuum cleaner in the world
now a days there are really good vacuum cleaners in the world