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Filing Compare ·
PRODUCTIVITY TECHNOLOGIES CORP /
10-Q (May 20, 2005)
vs
10-Q (Feb 22, 2005)
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10-Q · Feb 22, 2005
10-Q · May 24, 2004
10-Q · Feb 19, 2003
10-Q · Nov 19, 2002
10-Q · Feb 19, 2002
10-Q · Nov 14, 2001
10-Q · May 15, 2001
10-Q · Feb 14, 2001
10-Q · Nov 14, 2000
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