The Ultimate Guide to Buy Dental Chair, 10 Chapters!
2019-1-15u2002·u2002The earliest dental chair with adjustable elevation and tilt of the seat and back was manufactured around 1848. The same product was accorded patents on mid-August of the same year; 15 th August, 1848 to be precise. The patent was issued in the M.W. Hanchett of New York City in the United States.Get Price