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.
In 1885, James Trane, a Norwegian immigrant from Tromsoe, tromsÃ¸ opened his own plumbing and-pipe fitting shop In La, Crosse. Wisconsin he designed a new type of-low pressure steam heating, System trane vapor. heatingany of those traits, like the all aluminum spiny outdoor coil and the all aluminum evaporator coil, are still found in Trane's current residential equipment lines. In 1984, Trane was acquired by American Standard Inc., and became a fixture in the American Standard Companies business.