This is one example of many castles in the medieval time period. There were many parts to a castle. But, it depended on how the castle was built to recognize parts that did and did not appear on the castle built.
Like spray paint, these markers give off volatile organic compounds. Some of the most recently made permanent markers are made from recycled plastic.[citation needed] The permanent marker was invented in 1952 by Sidney Rosenthal.
In 1944, Walter J. De Groft patented a marking pen that held ink in liquid form in its handle and used a felt tip. This is the patent that will become a âSharpieâ pen in 1964. First popular (and usable) marker pen was Sidney Rosenthal's âMagic Markerâ which he invented and started selling in 1953. This marker had glass tube of ink for a body and a felt wick and its name comes from a fact that it was able to write on any surface.