| 31. | Freon displaces oxygen, enabling it to extinguish fires rapidly in enclosed spaces.
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| 32. | His father suggested he sell R-12 Freon for car air conditioners.
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| 33. | Home air conditioners don't use freon.
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| 34. | And the skyrocketing prices have lured a new breed of criminal _ freon smugglers.
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| 35. | Don't count on getting freon yourself to recharge your automobile air conditioner.
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| 36. | The Freon supply shrank more quickly than expected.
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| 37. | Q : Last year you ran a column about a Freon substitute called Frigic.
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| 38. | Overall, most experts say, it's a close equivalent to Freon.
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| 39. | In 1930, Frigidaire, one of GE s main competitors, synthesized Freon.
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| 40. | The introduction of Freon in the 1920s expanded the refrigerator market during the 1930s.
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