I roto i te 1965, Richard Isbell hanga te momo momo Americana mo American Type Founders, me te whakaurua te interrobang rite tetahi o nga pūāhua. I roto i te 1968, i te kī interrobang i wātea i runga i te tahi mau mīhini tuhituhi Remington. I roto i te 1970, i wātea whakakapi interrobang keycaps me momo hoki etahi mīhini tuhituhi Smith-Corona. Pātai: He aha te kī motuhake e taea te kitea i runga i te tahi mau mīhini tuhituhi Remington hangaia i roto i te 1968?
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