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Filing Compare ·
RESEARCH INC /MN/
8-K (Jul 17, 2002)
vs
8-K (Jun 13, 2002)
Compare against
8-K · Jun 13, 2002
8-K · Apr 5, 2002
8-K · Feb 28, 2002
8-K · Nov 19, 2001
8-K · Jun 21, 2001
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