Due to a request from the Raleigh News & Observer (N&O), and in line with North Carolinaâs State Personnel Law, UNC Health Care will share an updated salary database with the N&O in mid-February. We do not know when the N&O will publish this information.
(Accessed March 2, 2011). Shortly after John Hetrick had witnessed an automobile accident he received a patent in 1953 for a âsafety cushion assembly for automotive vehicles.â His U.S. Patent No. 2,649,311 was the first prototype for airbags. 5.
Invented by : Otto Von Guericke. Invented in year : 1650. Air Pump is a device that removes gas molecules from a sealed volume or a chamber in order to leave behind a partial vacuum. By removing gas from a chamber, a vacuum pump reduces the pressure inside the chamber.