YUELIANG GUO
Related Filers (1)
ION GEOPHYSICAL CORP (1)
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Ownership (3)
4
Friday, 12/3/2010
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 6/2/2010
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
3
Monday, 4/5/2010
ION GEOPHYSICAL CORP: Initial statement of beneficial ownership of securities
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