You must pass two qualifying exams in orthodontic assisting and infection control to become a Certified Orthodontic Assistant. As of April 2011, DANB certification for OAs was recognized in 38 states and required in four - Massachusetts, Maryland, New Jersey and Oregon.
American Standard Companies, Inc. was a global manufacturer of plumbing, heating, ventilating and air conditioning (HVAC) systems and services, bath and kitchen products and vehicle control systems.he company was formed in 1929 through the merger of the American Radiator Company and Standard Sanitary Manufacturing Company forming the American Radiator and Standard Sanitary Corporation. The group was renamed to the American Standard Corporation in 1967.
Carrier Corporation was acquired by United Technologies Corporation (UTC) in July 1979. Prior to the acquisition by UTC, Carrier Corporation was known as the Carrier Air Conditioning Company.International Comfort Products (ICP), headquartered in Lewisburg, Tennessee, was acquired by Carrier in 1999.illis Carrier is credited with inventing modern air conditioning in 1902. In 1915 Carrier, along with six other engineers, pooled together $32,600 to form the Carrier Engineering Corporation. In 1920 they purchased their first plant in Newark, New Jersey.