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