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Education and Entertainment
Owner
SIN, INC.
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Telecommunications
Owner
SIN, INC.
Dec 2, 1986
Computer and Scientific
Owner
SIN, INC.
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Telecommunications
Owner
SIN, INC.
Nov 13, 1984
Telecommunications
Owner
SIN, INC.
Nov 13, 1984
Education and Entertainment
Owner
SIN, INC.
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