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SC 13G/A

Amended Statement of Ownership

GEOSPACE TECHNOLOGIES CORP Filed 2012-01-25 Acc 0000790502-12-000018

Documents 1

SC 13G/A Amended Statement of Ownership , oyog12.txt

Around this filing

2012-02-24 SC 13G/A Amended Statement of Ownership
2012-01-30 8-K Director nominations · Other events
2012-01-27 10-K/A 10-K/A
2012-01-25 SC 13G/A Amended Statement of Ownership
2011-01-27 SC 13G/A Amended Statement of Ownership

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