Thirteen subjects with essential hypertension controlled on oral enalapril (20 mg/day) therapy were entered into a protocol to assess serially 24-hour blood pressure, the renin-angiotensin-aldosterone system, angiotensin-converting enzyme activity, and plasma and urine enalaprilat drug levels, following both chronic oral administration of enalapril ...
Alexander Graham Bell is often credited as the inventor of the telephone since he was awarded the first successful patent. However, there were many other inventors such as Elisha Gray and Antonio Meucci who also developed a talking telegraph. Baker, Burton H. The gray matter: the forgotten story of the telephone. St. Joseph, MI, Telepress, 2000.
Alexander Miles. Alexander Miles was an African-American inventor who was best known for being awarded a patent for an automatically opening and closing elevator door design in 1887. Contrary to many sources, Miles was not the original inventor of this device. In 1874, 13 years before Miles' patent was awarded, John W. Meaker was awarded U.S. Patent 147,853 for the invention of the first automatic elevator door system.