Rear overhang in excess of 4 feet is required to. display a 18-inch-square red flag for daytime. travel and clearance lights during nighttime. travel. Loads shall not extend more than. 14 feet beyond the rear of the bed or body of. the vehicle.
Patricia Bath's patent (no. 4,744,360), a method for removing cataract lenses, transformed eye surgery, using a laser device making the procedure more accurate. Patricia Bath patentPatricia Bath s passionate dedication to the treatment and prevention of blindness led her to develop the Cataract Laserphaco Probe.
Black surgeon performs the first sucessful open-heart surgery in America. On this date in 1893, the first successful American open-heart surgery was performed by a Black surgeon, Dr. Daniel Hale Williams. Dr. Daniel Williams completed the operation on a young man named James Cornish.