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  2. Philco - Wikipedia

    en.wikipedia.org/wiki/Philco

    Philco Socket Power A & B Battery Eliminators - 1925 August brochure Philco Model B-60 "B" Socket Power Battery Eliminator - August 1925 Until the mid- to late-1920s, all radios except crystal sets were powered by vacuum tube batteries which were expensive, needed frequent charging, and leaked battery acid , reducing the wife approval factor in ...

  3. Solar-powered refrigerator - Wikipedia

    en.wikipedia.org/wiki/Solar-powered_refrigerator

    A solar-powered refrigerator is a refrigerator which runs on energy directly provided by sun, and may include photovoltaic or solar thermal energy. Solar-powered refrigerators are able to keep perishable goods such as meat and dairy cool in hot climates and are used to keep much-needed vaccines at their appropriate temperature to avoid spoilage.

  4. Refrigerator - Wikipedia

    en.wikipedia.org/wiki/Refrigerator

    Food in a refrigerator with its door open. A refrigerator, commonly shortened to fridge, is a commercial and home appliance consisting of a thermally insulated compartment and a heat pump (mechanical, electronic or chemical) that transfers heat from its inside to its external environment so that its inside is cooled to a temperature below the room temperature. [1]

  5. Home appliance - Wikipedia

    en.wikipedia.org/wiki/Home_appliance

    The broad usage allows for nearly any device intended for domestic use to be a home appliance, including consumer electronics as well as stoves, [5] refrigerators, toasters [5] and air conditioners. The development of self-contained electric and gas-powered appliances, an American innovation, emerged in the early 20th century.

  6. Kelvinator - Wikipedia

    en.wikipedia.org/wiki/Kelvinator

    Kelvinator ad from 1920 Kelvinator refrigerator, c. 1926. The enterprise was established on September 18, 1914, in Detroit, Michigan, United States, by engineer Nathaniel B. Wales, who introduced his idea for a practical electric refrigeration unit for the home to Edmund Copeland and Arnold Goss.

  7. Lunchbox - Wikipedia

    en.wikipedia.org/wiki/Lunchbox

    Lunch box and vacuum bottle owned by Harry S. Truman A collection of lunch boxes for school students Insulated thermal bag with ice packs. A lunch box [1] [2] [3] (or lunchbox) [4] [5] [6] is a hand-held container used to transport food, usually to work or to school. It is commonly made of metal or plastic, is reasonably airtight and often has ...