Littmann
Website: http://www.3m.com/3M/en_US/littmann-stethoscopes-us/ In the 1960s Dr. David Littmann M.D.created what has become one of the most iconic models of stethoscope. His creation named the Littmann Cardiology became the gold standard for the modern stethoscope. Littmann and a partner formed Cardiosonics Inc to sell and market his product. The company was soon purchased by 3M which continues … Read more