0000950135-08-007095 10-Q 4 20080930 20081110 20081110 IPG PHOTONICS CORP 0001111928 3674 043444218 DE 10-Q 34 001-33155 081175582 50 OLD WEBSTER ROAD OXFORD MA 01540 5083731100 50 OLD WEBSTER ROAD OXFORD MA 01540 10-Q 1 b72660ipe10vq.htm IPG PHOTONICS CORPORATION EX-31.1 2 b72660ipexv31w1.htm EX-31.1 SECTION 302 CERTIFICATION OF THE CEO EX-31.2 3 b72660ipexv31w2.htm EX-31.2 SECTION 302 CERTIFICATION OF THE CFO EX-32 4 b72660ipexv32.htm EX-32 SECTION 906 CERTIFICATION OF THE CEO & CFO