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James Mainprize is a film industry professional born on July 13, 1936. The only credited film appearance on record is in the 2003 film How to Lose a Guy in 10 Days, where Mainprize portrayed Mr. DeLauer.
Given the limited verifiable information, Mainprize's role in cinema is documented solely through this single credited performance. No additional filmography, biographical details, or professional background are available in the provided data.
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