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    Grant Tinker: He Turned Quality TV Into Hits

    One of the rare TV executives whose creative mind was as alert as his business mind, Grant Tinker has died at age 90. After coming up through the TV ranks by working for other studios, Tinker formed MTM Enterprises in 1970, named after Mary Tyler Moore, whom he’d married in 1962. The Mary Tyler Moore Show, which ran from 1970 to 1977, introduced a new sophistication, some new snap and big-city vigor, into the sitcom genre.