Mohammad Imtiaz is a third-generation doctor who operates a small hospital in India. He is quite good at healing his patients—which happen to be fountain pens. For decades, Imtiaz has been repairing and selling fountain pens at his Pen Hospital in Kolkata. Situated in a narrow alleyway of Chowringhee Road in Esplanade, this one-of-a-kind hospital has been treating broken nibs and pen pistons since before India gained its independence in 1947. Fountain pen connoisseurs and vintage pen collectors in Kolkata and the surrounding area know where to go if their…