Establishing the Conklin Pen Company® as a leader in American writing instruments, the Crescent Filler™ became one of Conklin® brand’s signature pens and changed the industry forever. Founder Roy Conklin from Toledo, Ohio, patented the design for the first self-filling pen in 1897, causing his company to thrive and gain the approval of author Mark Twain, who became the official spokesperson for the Conklin® brand.