A shekara ta 1965, Richard Isbell ya kirkiro nau'in rubutun Americana don American Type Founders kuma ya hada da interrobang a matsayin daya daga cikin haruffa. A shekara ta 1968, an sami maɓallin interrobang a kan wasu na'urorin rubutu na Remington. A cikin shekarun 1970, an maye gurbin maɓallin maɓallin maɓallin maɓallin maɓalli da kuma nau'ikan rubutu don wasu na'urorin rubutu na Smith-Corona. Tambaya: Wace maɓalli na musamman za a iya samu a kan wasu na'urorin rubutu na Remington da aka kera a 1968?
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