0001111928-08-000138 4 1 20081030 20081031 20081031 IPG PHOTONICS CORP 0001111928 3674 043444218 DE 50 OLD WEBSTER ROAD OXFORD MA 01540 5083731100 50 OLD WEBSTER ROAD OXFORD MA 01540 BuAbbud George H 0001378668 4 34 001-33155 081154651 508-373-1100 IPG PHOTONICS CORPORATION 50 OLD WEBSTER ROAD OXFORD MA 01540 4 1 edgar.xml PRIMARY DOCUMENT