[["\"Sharpie\" branded permanent markers were launched in 1964 by the Sanford Ink Company. The permanent marker itself was invented in 1952 by Sidney Rosenthal.", 306.0], ["\"Sharpie\" branded permanent markers were launched in 1964 by the Sanford Ink Company. The permanent marker itself was invented in 1952 by Sidney Rosenthal.", 97.0], ["1964-Sanford turned its focus to the emerging marker business and introduced the Sharpie marker. The Sharpie Fine Point black marker became the first pen-style permanent marker. It wrote on almost any surface from glass, wood and stone, to plastic, metal and, of course, paper.", 16.0]]
when were sharpies invented
history