SC 13G/A

Amended Statement of Ownership

GEOSPACE TECHNOLOGIES CORP Filed 2011-01-27 Acc 0000790502-11-000014

Documents 1

SC 13G/A Amended Statement of Ownership , oyog11.txt

Around this filing

2012-01-25 SC 13G/A Amended Statement of Ownership
2011-01-27 SC 13G/A Amended Statement of Ownership
2010-01-26 SC 13G/A Amended Statement of Ownership

Link to a passage

External

SEC EDGAR (opens in new tab)