A carabiner is a common piece of mountain climbing equipment, a metal clip that allows climbers to link together ropes and harnesses. If you're learning to rock climb, you'll most likely use a carabiner. Carabiners are vital for climbers and mountaineers to keep various pieces of equipment connected to each other, and thus to keep themselves safe while they're climbing. A carabiner can take various forms and shapes, but it's usually a metal oval, with a spring-loaded clip that stays closed unless it's pushed open.
In 1899, American Telephone & Telegraph (AT&T) acquired the assets of its parent, the American Bell Telephone Company. American Bell had created AT&T to provide long-distance calls between New York and Chicago and beyond. AT&T became the parent of American Bell Telephone Company, and thus the head of the Bell System, because regulatory and tax rules were leaner in New York than in Boston, where American Bell was headquartered.
HVAC products became Tappan Air Conditioning division in 1972. American Standard purchased the Trane Company in 1984, American Standard name revived in 1988. In 2007 all but HVAC sold off, corporate name changed to Trane. Trane was them purchased by Ingersoll Rand.UXAIRE: Founded in 1939 by C. A. Olsen, purchased by Westinghouse in 1955, was purchased by York in 1981. MAGIC CHEF: In 1986, Magic Chef was acquired by the Maytag Co. Air conditioning division was sold to Lennox in 1988 and renamed Armstrong Air. See Johnson.