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1989-12-23
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1989-08-09
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1996-12-13
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1990-12-31
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1988-07-27
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1988-01-27
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1987-01-15
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1987-09-15
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1987-04-08
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1988-05-06
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1988-03-15
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1987-04-15
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1986-01-15
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1983-06-15
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1987-02-16
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1990-07-16
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1988-12-15
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1990-10-15
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1985-03-15
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1988-04-15
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1985-05-07
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1984-09-14
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1985-03-30
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1982-08-31
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1989-09-12
Connection for synchronous motor's speed regulation