0000950135-09-003863 10-Q 4 20090331 20090511 20090511 IPG PHOTONICS CORP 0001111928 3674 043444218 DE 10-Q 34 001-33155 09815630 50 OLD WEBSTER ROAD OXFORD MA 01540 5083731100 50 OLD WEBSTER ROAD OXFORD MA 01540 10-Q 1 b75196ipe10vq.htm IPG PHOTONICS CORPORATION EX-31.1 2 b75196ipexv31w1.htm EX-31.1 CERTIFICATION OF THE CEO EX-31.2 3 b75196ipexv31w2.htm EX-31.2 CERTIFICATION OF THE CFO EX-32 4 b75196ipexv32.htm EX-32 CERTIFICATION OF THE CEO AND CFO