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.
At What Speed Does an Airbag Deploy? The airbag was developed by American industrial engineer John W. Hetrick, who patented and built the prototype on his kitchen table in 1952. The design resulted in a gas-filled envelope that can be automatically extended to cushion passenger impact during a car crash.